diff --git a/EnzevalosContact+CoreDataClass.swift b/EnzevalosContact+CoreDataClass.swift
index 7ee748fd03621548dc5e459f333952c442be981c..f337d916372e5b30cf46acb48d083de83dad5f87 100644
--- a/EnzevalosContact+CoreDataClass.swift
+++ b/EnzevalosContact+CoreDataClass.swift
@@ -29,23 +29,23 @@ fileprivate func < <T : Comparable>(lhs: T?, rhs: T?) -> Bool {
 @objc(EnzevalosContact)
 open class EnzevalosContact: NSManagedObject, Contact, Comparable {
 
-    override open var debugDescription: String{
-        get{
+    override open var debugDescription: String {
+        get {
             var string = ""
             string = string + "Name: \(name) #Keys: \(publicKeys.count) #Addr: \(addresses.count) \n Addresses: \n"
-            for addr in addresses{
-                if let a = addr as? Mail_Address{
+            for addr in addresses {
+                if let a = addr as? Mail_Address {
                     string = string + a.address + "\n"
                 }
             }
             string = string + "public Keys: \n"
-            for pk in publicKeys{
+            for pk in publicKeys {
                 string = string + "\(pk.keyID) \n"
             }
             return string
         }
     }
-    
+
     open var name: String {
         if let name = nameOptional {
             return name
@@ -80,7 +80,7 @@ open class EnzevalosContact: NSManagedObject, Contact, Comparable {
     open var to: [PersistentMail] {
         get {
             var mails = [PersistentMail]()
-            for adr in addresses{
+            for adr in addresses {
                 if let a = adr as? Mail_Address, let to = a.to {
                     for m in to {
                         mails.append(m as! PersistentMail)
@@ -134,11 +134,11 @@ open class EnzevalosContact: NSManagedObject, Contact, Comparable {
             return mails
         }
     }
-    
-    var publicKeys: Set<PersistentKey>{
-        get{
+
+    var publicKeys: Set<PersistentKey> {
+        get {
             var pks = Set<PersistentKey>()
-            for adr in getMailAddresses(){
+            for adr in getMailAddresses() {
                 pks = pks.union(adr.publicKeys)
             }
             return pks
@@ -147,16 +147,16 @@ open class EnzevalosContact: NSManagedObject, Contact, Comparable {
 
     open var records: [KeyRecord] {
         get {
-            if let krecords = self.keyrecords as? Set<KeyRecord>{
+            if let krecords = self.keyrecords as? Set<KeyRecord> {
                 return Array(krecords)
-            }        
+            }
             return []
         }
 
     }
     open var hasKey: Bool {
         get {
-            for item in addresses{
+            for item in addresses {
                 let adr = item as! MailAddress
                 if adr.hasKey {
                     return true
@@ -168,16 +168,16 @@ open class EnzevalosContact: NSManagedObject, Contact, Comparable {
 
     open var cnContact: CNContact? {
         get {
-            if let cn = cnidentifier{
+            if let cn = cnidentifier {
                 let contacts = AddressHandler.getContactByID(cn)
-                if contacts.count > 0{
+                if contacts.count > 0 {
                     return contacts.first
                 }
             }
             return nil
         }
     }
-    
+
     open var newCnContact: CNContact {
         let con = CNMutableContact()
         let name = self.displayname
@@ -227,10 +227,10 @@ open class EnzevalosContact: NSManagedObject, Contact, Comparable {
         }
         return adr
     }
-    
-    func isAddress(mailadr: String) -> Bool{
-        for adr in getMailAddresses(){
-            if mailadr.lowercased() == adr.mailAddress.lowercased(){
+
+    func isAddress(mailadr: String) -> Bool {
+        for adr in getMailAddresses() {
+            if mailadr.lowercased() == adr.mailAddress.lowercased() {
                 return true
             }
         }
diff --git a/PersistentMail +CoreDataClass.swift b/PersistentMail +CoreDataClass.swift
index e5cc27f1c15c449a5456f2dd9ad35dfad462536a..1b7deeeb1de66430f3bbaf81556028402cde76cb 100644
--- a/PersistentMail +CoreDataClass.swift	
+++ b/PersistentMail +CoreDataClass.swift	
@@ -15,11 +15,11 @@ import CoreData
 open class PersistentMail: NSManagedObject, Mail {
     public var predecessor: PersistentMail? = nil
 
-    
+
     var showMessage: Bool = false
 
     var isSecure: Bool {
-        return isEncrypted && isSigned && isCorrectlySigned && !unableToDecrypt && !trouble &&  keyID != nil
+        return isEncrypted && isSigned && isCorrectlySigned && !unableToDecrypt && !trouble && keyID != nil
     }
     var isRead: Bool {
         get {
@@ -35,8 +35,8 @@ open class PersistentMail: NSManagedObject, Mail {
             _ = DataHandler.handler.save(during: "set read flag")
         }
     }
-    
-    var isAnwered: Bool{
+
+    var isAnwered: Bool {
         get {
             let value = flag.contains(MCOMessageFlag.answered)
             return value
@@ -80,7 +80,7 @@ open class PersistentMail: NSManagedObject, Mail {
         guard !trouble else {
             return nil
         }
-        
+
         var message: String? = ""
         if isEncrypted && !unableToDecrypt {
             message = decryptedBody
diff --git a/enzevalos_iphone/About/AboutViewController.swift b/enzevalos_iphone/About/AboutViewController.swift
index c8b281f1f91b28f3f2e18d69d0a3e9367066e30b..a51885239dc6333c849a8adc81fdbaf4b50cb2b8 100644
--- a/enzevalos_iphone/About/AboutViewController.swift
+++ b/enzevalos_iphone/About/AboutViewController.swift
@@ -55,7 +55,7 @@ class AboutTextDelegate: NSObject, UITextViewDelegate {
         }
         return true
     }
-    
+
     @available(iOS 10.0, *)
     func textView(_ textView: UITextView, shouldInteractWith url: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
         if url.scheme == "mailto" {
diff --git a/enzevalos_iphone/AddressHandler.swift b/enzevalos_iphone/AddressHandler.swift
index 546c30b8292e8b941b5fbd963c254d8a8d7d240d..6611566083bff561ad72c8ab47f73c11002ffa64 100644
--- a/enzevalos_iphone/AddressHandler.swift
+++ b/enzevalos_iphone/AddressHandler.swift
@@ -20,35 +20,35 @@ class AddressHandler {
         do {
 
             try AppDelegate.getAppDelegate().contactStore.enumerateContacts(with: CNContactFetchRequest(keysToFetch: [CNContactFormatter.descriptorForRequiredKeys(for: CNContactFormatterStyle.fullName), CNContactEmailAddressesKey as CNKeyDescriptor, CNContactImageDataKey as CNKeyDescriptor, CNContactThumbnailImageDataKey as CNKeyDescriptor]), usingBlock: {
-                ( c: CNContact, stop) -> Void in
-                for email in c.emailAddresses {
-                    let addr = email.value as String
-                    var type: UIImage? = nil
-                    if c.emailAddresses.count > 1 {
-                        if email.label == "_$!<Work>!$_" {
-                            type = UIImage(named: "work2_white")!
-                        } else if email.label == "_$!<Home>!$_" {
+                    (c: CNContact, stop) -> Void in
+                    for email in c.emailAddresses {
+                        let addr = email.value as String
+                        var type: UIImage? = nil
+                        if c.emailAddresses.count > 1 {
+                            if email.label == "_$!<Work>!$_" {
+                                type = UIImage(named: "work2_white")!
+                            } else if email.label == "_$!<Home>!$_" {
                                 type = UIImage(named: "home2_white")!
-                        } else if email.label == "_$!<iCloud>!$_" {
+                            } else if email.label == "_$!<iCloud>!$_" {
                                 //TODO: appleIcon hinzufügen
+                            }
                         }
-                    }
-                    var color = c.getColor()
-                    if c.thumbnailImageData != nil {
-                        color = UIColor.gray //blackColor()
-                    }
-                    if addr == "" {
-                        continue
-                    }
-                    if !inserted.contains(addr.lowercased()) {
-                        if let name = CNContactFormatter.string(from: c, style: .fullName) {
-                            cons.append((c.getImageOrDefault(), name, addr, type, color))
-                        } else {
-                            cons.append((c.getImageOrDefault(), "NO NAME", addr, type, color))
+                        var color = c.getColor()
+                        if c.thumbnailImageData != nil {
+                            color = UIColor.gray //blackColor()
+                        }
+                        if addr == "" {
+                            continue
+                        }
+                        if !inserted.contains(addr.lowercased()) {
+                            if let name = CNContactFormatter.string(from: c, style: .fullName) {
+                                cons.append((c.getImageOrDefault(), name, addr, type, color))
+                            } else {
+                                cons.append((c.getImageOrDefault(), "NO NAME", addr, type, color))
+                            }
                         }
                     }
-                }
-            })
+                })
         }
         catch { }
         var list: [(UIImage, String, String, UIImage?, UIColor)] = []
@@ -117,11 +117,11 @@ class AddressHandler {
             }
         }
 
-        
+
 
         return list
     }
-    
+
     static func getContact(_ name: String) -> [CNContact] {
         if name == "" {
             return []
@@ -163,7 +163,7 @@ class AddressHandler {
         let cons = DataHandler.handler.folderRecords(folderPath: UserManager.backendInboxFolderPath)
         var list: [(UIImage, String, String, UIImage?, UIColor)] = []
         var localInserted = inserted
-        
+
         for con: KeyRecord in cons {
             if list.count >= CollectionDataDelegate.maxFrequent {
                 break
@@ -180,7 +180,7 @@ class AddressHandler {
             }
             if !insertedEntry {
                 var addrType: UIImage? = nil
-                
+
                 if address.label.label == "_$!<Work>!$_" {
                     addrType = UIImage(named: "work2_white")!
                 }
@@ -193,7 +193,7 @@ class AddressHandler {
                         color = UIColor.gray //blackColor()
                     }
                     let entry = (cn.getImageOrDefault(), con.ezContact.displayname!, address.mailAddress, addrType, color)
-                    
+
                     list.append(entry)
                     localInserted.append(address.mailAddress)
                 } else {
@@ -203,7 +203,7 @@ class AddressHandler {
                 }
             }
         }
-        
+
         return list
     }
 
@@ -263,15 +263,15 @@ class AddressHandler {
 
         return contacts
     }
-    
-    
-    static func updateCNContacts(){
+
+
+    static func updateCNContacts() {
         let enzContacts = DataHandler.handler.getContacts()
-        
-        for contact in enzContacts{
-            if contact.cnContact == nil{
+
+        for contact in enzContacts {
+            if contact.cnContact == nil {
                 let contacts = findContact(contact)
-                if contacts.count > 0{
+                if contacts.count > 0 {
                     contact.cnidentifier = contacts.first?.identifier
                 }
             }
diff --git a/enzevalos_iphone/ArrowView.swift b/enzevalos_iphone/ArrowView.swift
index 61c634e89064f54751a90d0fb35b0da1d39d3cef..d866bdc0580823dad74a8f64c9717a28cff9d705 100755
--- a/enzevalos_iphone/ArrowView.swift
+++ b/enzevalos_iphone/ArrowView.swift
@@ -17,12 +17,12 @@ import UIKit
 class ArrowView: UIView {
     // MARK:- Variables
 
-    let width : CGFloat = 3.0 // change in CircleView too
+    let width: CGFloat = 3.0 // change in CircleView too
 
     /**
      Changes the Color with which the Line is drawn. Default is gray
      */
-    var pathColor : UIColor?
+    var pathColor: UIColor?
 
 
     // MARK:- Functions
@@ -32,8 +32,8 @@ class ArrowView: UIView {
         let path = UIBezierPath()
         path.lineWidth = width
 
-        path.move(to: CGPoint(x: self.frame.width/2, y: 0 ))
-        path.addLine(to: CGPoint(x: self.frame.width/2, y: self.frame.height ))
+        path.move(to: CGPoint(x: self.frame.width / 2, y: 0))
+        path.addLine(to: CGPoint(x: self.frame.width / 2, y: self.frame.height))
 
         path.close()
 
diff --git a/enzevalos_iphone/BadgeCaseCollectionViewCell.swift b/enzevalos_iphone/BadgeCaseCollectionViewCell.swift
index f52528583ac0027c98360007558d57b056a8f7c9..799bf3089b8390755488874687439559afda261e 100755
--- a/enzevalos_iphone/BadgeCaseCollectionViewCell.swift
+++ b/enzevalos_iphone/BadgeCaseCollectionViewCell.swift
@@ -21,5 +21,5 @@ class BadgeCaseCollectionViewCell: UICollectionViewCell {
     @IBOutlet weak var badgeName: UILabel!
 
 
-    
+
 }
diff --git a/enzevalos_iphone/Badges.swift b/enzevalos_iphone/Badges.swift
index dbc7471250542d1d575a222695e52b414f5814df..065b61e0b375fabe0e5e9a51aed56a821563a3bf 100755
--- a/enzevalos_iphone/Badges.swift
+++ b/enzevalos_iphone/Badges.swift
@@ -14,7 +14,7 @@ import UIKit
 /**
  Enum Type for easier Recogition.
  */
-enum BadgeType : Int {
+enum BadgeType: Int {
     case keyMaster
     case trustmaster
     case encMaster
@@ -23,7 +23,7 @@ enum BadgeType : Int {
     case onBoarding
     case inviteAFriend
     case Ambassador
-    
+
     case MailMaster
     case MailMaster1
     case MailMaster10
@@ -38,13 +38,13 @@ enum BadgeType : Int {
     case SecureMailMaster50
     case SecureMailMaster100
     case SecureMailMaster1000
-    case None  // for SubBadge
+    case None // for SubBadge
 }
 
 /**
  Identifies Achievments, needed for DataStorage, mapping Achievments with Badges, Setting Conditions for Achievments
  */
-enum Achievment{
+enum Achievment {
     case Firstkey
     case OneFriendInvited
     case FiveFriendsInvited
@@ -68,20 +68,20 @@ enum Achievment{
 enum SegueName {
     case LinearBadge
     case inviteFriend
-    case None  // for SubBadge
+    case None // for SubBadge
 }
 
 
 class Badges: NSObject {
     // MARK:- Variables
-    let type : BadgeType
+    let type: BadgeType
 
     // Picture Names
-    let offName : String
-    let onName : String
-    let segueName : SegueName
-    let displayName : String
-    let achievments : [Achievment]?
+    let offName: String
+    let onName: String
+    let segueName: SegueName
+    let displayName: String
+    let achievments: [Achievment]?
 
     // MARK:- Functions
     /**
@@ -92,7 +92,7 @@ class Badges: NSObject {
      - Parameter displayName: Name Displayed in badge Case and elsewhere
      - Parameter achievmentsNeeded: Achievments needed to Complete this Badge, if nil Badge is always Completed
      */
-    init(type : BadgeType = .None, pictureOff : String, pictureOn : String, segue : SegueName = .None , displayName : String, achievmentsNeeded : [Achievment]? = nil) {
+    init(type: BadgeType = .None, pictureOff: String, pictureOn: String, segue: SegueName = .None, displayName: String, achievmentsNeeded: [Achievment]? = nil) {
         self.type = type
         self.offName = pictureOff
         self.onName = pictureOn
@@ -110,9 +110,9 @@ class Badges: NSObject {
      */
     func badgeImage() -> UIImage {
 
-        var image : UIImage?
-        if (GamificationData.sharedInstance.badgeAchieved(badge: self)){
-           image = UIImage.init(named: onName)
+        var image: UIImage?
+        if (GamificationData.sharedInstance.badgeAchieved(badge: self)) {
+            image = UIImage.init(named: onName)
         } else {
             image = UIImage.init(named: offName)
         }
@@ -134,7 +134,7 @@ class Badges: NSObject {
 
 extension UIColor {
     class func badgeGreen() -> UIColor {
-        return UIColor(red: 37/255, green: 132/255, blue: 6/255, alpha: 1)
+        return UIColor(red: 37 / 255, green: 132 / 255, blue: 6 / 255, alpha: 1)
     }
 
 }
diff --git a/enzevalos_iphone/CNMailAddressesExtension.swift b/enzevalos_iphone/CNMailAddressesExtension.swift
index b788e1c7f53edec2ad30449fd9f8a3e2af33c12c..9075015ffe3b1e8bf36af7bdcd3dc97388b05a7d 100644
--- a/enzevalos_iphone/CNMailAddressesExtension.swift
+++ b/enzevalos_iphone/CNMailAddressesExtension.swift
@@ -9,51 +9,51 @@
 import Foundation
 import Contacts
 
-open class CNMailAddressExtension: MailAddress{
+open class CNMailAddressExtension: MailAddress {
     public var primaryKey: PersistentKey?
-    
+
     public var publicKeys: Set<PersistentKey>
-    
 
-    open var mailAddress:String{
-        get{
+
+    open var mailAddress: String {
+        get {
             return label.value as String
         }
     }
     open var label: CNLabeledValue<NSString> //FIXME: NSString hier richtig?
-    
-    open var prefEnc: EncState{
-        get{
+
+    open var prefEnc: EncState {
+        get {
             return EncState.NOAUTOCRYPT
         }
-        set{
+        set {
         }
     }
-    open var hasKey: Bool{
-        get{
+    open var hasKey: Bool {
+        get {
             return false
         }
     }
-    
-    
-    open var Key: PersistentKey?{
-        get{
+
+
+    open var Key: PersistentKey? {
+        get {
             return nil
         }
     }
-    
-    open var contact: EnzevalosContact?{
-        get{
+
+    open var contact: EnzevalosContact? {
+        get {
             return nil
         }
     }
-    
-    init(addr: CNLabeledValue<NSString>){ //FIXME: NSString hier richtig?
+
+    init(addr: CNLabeledValue<NSString>) { //FIXME: NSString hier richtig?
         self.label = addr
         self.publicKeys = Set<PersistentKey>()
     }
-    
-    convenience init(addr: NSString){ //FIXME: manuell: String -> NSString
+
+    convenience init(addr: NSString) { //FIXME: manuell: String -> NSString
         self.init(addr: CNLabeledValue(label: CNLabelOther, value: addr))
     }
 }
diff --git a/enzevalos_iphone/CircleView.swift b/enzevalos_iphone/CircleView.swift
index 23cb86f173f09c6ea9bcd385739de9a5d89f47f8..696718ce711c43f26c02e40b75b3a182f3e9da87 100755
--- a/enzevalos_iphone/CircleView.swift
+++ b/enzevalos_iphone/CircleView.swift
@@ -31,15 +31,15 @@ class CircleView: UIView {
      
      Default is .Down
      */
-    var drawTop : Direction = .Down
+    var drawTop: Direction = .Down
 
-    let width : CGFloat = 3.0 // change in ArrowView too
+    let width: CGFloat = 3.0 // change in ArrowView too
 
 
     /**
      Changes the Color with which the Line is drawn. Default is gray
      */
-    var pathColor : UIColor?
+    var pathColor: UIColor?
 
     // MARK:- Functions
 
@@ -51,17 +51,17 @@ class CircleView: UIView {
 
         switch drawTop {
         case .Both:
-            path.move(to: CGPoint(x: self.frame.width/2, y: 0 ))
-            path.addLine(to: CGPoint(x: self.frame.width/2, y: self.frame.height ))
+            path.move(to: CGPoint(x: self.frame.width / 2, y: 0))
+            path.addLine(to: CGPoint(x: self.frame.width / 2, y: self.frame.height))
 
             break
         case .Down:
-            path.move(to: CGPoint(x: self.frame.width/2, y: self.frame.height/2 ))
-            path.addLine(to: CGPoint(x: self.frame.width/2, y: self.frame.height ))
+            path.move(to: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2))
+            path.addLine(to: CGPoint(x: self.frame.width / 2, y: self.frame.height))
             break
         case .Up:
-            path.move(to: CGPoint(x: self.frame.width/2, y: 0 ))
-            path.addLine(to: CGPoint(x: self.frame.width/2, y: self.frame.height / 2 ))
+            path.move(to: CGPoint(x: self.frame.width / 2, y: 0))
+            path.addLine(to: CGPoint(x: self.frame.width / 2, y: self.frame.height / 2))
             break
         case .None:
             break
diff --git a/enzevalos_iphone/CollectionDataDelegate.swift b/enzevalos_iphone/CollectionDataDelegate.swift
index c23b2db1eda8c3e244de629dc9b6297a4ad34319..62b5e603368478e7031a2020c29c170c4a6fb944 100644
--- a/enzevalos_iphone/CollectionDataDelegate.swift
+++ b/enzevalos_iphone/CollectionDataDelegate.swift
@@ -8,37 +8,37 @@
 
 import UIKit
 
-class CollectionDataDelegate : NSObject, UICollectionViewDataSource, UICollectionViewDelegate {
-    
+class CollectionDataDelegate: NSObject, UICollectionViewDataSource, UICollectionViewDelegate {
+
     var collectionView: UICollectionView?
-    
-    var suggestionFunc : (([String]) -> [(UIImage, String, String, UIImage?, UIColor)])
-                    //[bereits eingetragene emailadresse] -> [(Kontaktbild, Name, Emailadresse, emailTypeImage)]
-    var alreadyInserted : [String] = []
+
+    var suggestionFunc: (([String]) -> [(UIImage, String, String, UIImage?, UIColor)])
+    //[bereits eingetragene emailadresse] -> [(Kontaktbild, Name, Emailadresse, emailTypeImage)]
+    var alreadyInserted: [String] = []
     var suggestion: [(UIImage, String, String, UIImage?, UIColor)] = []
-    var insertCallback : (String, String) -> Void = {(name : String, address : String) -> Void in return}
-    
-    
+    var insertCallback: (String, String) -> Void = { (name: String, address: String) -> Void in return }
+
+
     //used in suggestionFunc
     static let maxFrequent = 10
-    
-    init(suggestionFunc: @escaping ([String]) -> [(UIImage, String, String, UIImage?, UIColor)], insertCallback : @escaping (String, String) -> Void){
+
+    init(suggestionFunc: @escaping ([String]) -> [(UIImage, String, String, UIImage?, UIColor)], insertCallback: @escaping (String, String) -> Void) {
         self.suggestionFunc = suggestionFunc
         self.insertCallback = insertCallback
         super.init()
     }
-    
+
     func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
         suggestion = suggestionFunc(alreadyInserted)
         return suggestion.count
     }
-    
+
     func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
         let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "frequent", for: indexPath) as! FrequentCell
         cell.autoresizingMask = UIViewAutoresizing.flexibleHeight
         cell.clipsToBounds = true
         let index = indexPath.row
-        cell.img.layer.cornerRadius = cell.img.frame.height/2
+        cell.img.layer.cornerRadius = cell.img.frame.height / 2
         cell.img.clipsToBounds = true
         cell.img.image = suggestion[index].0
         cell.name.text = suggestion[index].1
@@ -53,14 +53,14 @@ class CollectionDataDelegate : NSObject, UICollectionViewDataSource, UICollectio
         }
         return cell
     }
-    
+
     func numberOfSections(in collectionView: UICollectionView) -> Int {
         return 1
     }
-    
+
     func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
         let tuple = suggestion[indexPath.row]
         insertCallback(tuple.1, tuple.2)
     }
-    
+
 }
diff --git a/enzevalos_iphone/Contact.swift b/enzevalos_iphone/Contact.swift
index 1b7a04c165c490522e254210c70e7760927e0f61..8f64c4e84309bf63e4341075cbb29e3ab619a8b9 100644
--- a/enzevalos_iphone/Contact.swift
+++ b/enzevalos_iphone/Contact.swift
@@ -23,7 +23,7 @@ extension Contact {
         var tag = String()
         if name.count > 0 {
             let seperated = name.components(separatedBy: " ")
-            tag = seperated.map({if let a = $0.first { return "\(a)" }; return "" }).joined()
+            tag = seperated.map({ if let a = $0.first { return "\(a)" }; return "" }).joined()
         }
 
         text = NSAttributedString(string: tag.uppercased(), attributes: [NSAttributedStringKey.foregroundColor: UIColor.white, NSAttributedStringKey.font: UIFont.systemFont(ofSize: 32.2)])
@@ -73,7 +73,7 @@ extension Contact {
     }
 
     func getColor() -> UIColor {
-        
+
         if let enzCon = self as? EnzevalosContact {
             if let color = enzCon.color {
                 return color
diff --git a/enzevalos_iphone/ContactCell.swift b/enzevalos_iphone/ContactCell.swift
index 52fad7dc20042b7be84387369328c90edbe20d17..c763099b8cc76b86d8595c3e3203a4513d5912e3 100644
--- a/enzevalos_iphone/ContactCell.swift
+++ b/enzevalos_iphone/ContactCell.swift
@@ -9,10 +9,10 @@
 import Foundation
 import UIKit
 
-class ContactCell : UITableViewCell {
-    
+class ContactCell: UITableViewCell {
+
     @IBOutlet weak var name: UILabel!
     @IBOutlet weak var address: UILabel!
     @IBOutlet weak var img: UIImageView!
-       
+
 }
diff --git a/enzevalos_iphone/ContactViewController.swift b/enzevalos_iphone/ContactViewController.swift
index d92f62482f23d43c482460224e4387bda4b09914..7ad5e0ae7ec6b926c282626e95f9ec606e7e0984 100644
--- a/enzevalos_iphone/ContactViewController.swift
+++ b/enzevalos_iphone/ContactViewController.swift
@@ -234,7 +234,7 @@ class ContactViewController: UIViewController {
             if let DestinationViewController = segue.destination as? QRScannerView {
                 DestinationViewController.fingerprint = sender as? String
                 DestinationViewController.callback = verifySuccessfull
-                DestinationViewController.keyId = self.keyRecord?.keyID 
+                DestinationViewController.keyId = self.keyRecord?.keyID
                 Logger.log(verify: self.keyRecord?.keyID ?? "noKeyID", open: true)
             }
         }
diff --git a/enzevalos_iphone/CryptoObject.swift b/enzevalos_iphone/CryptoObject.swift
index ce1cbc05748c0a5f2ac620a8fcd2400b24fc3e5b..931f0cd2a9bce3f6ec1ee93f7e2773f2df641a02 100644
--- a/enzevalos_iphone/CryptoObject.swift
+++ b/enzevalos_iphone/CryptoObject.swift
@@ -24,8 +24,8 @@ enum EncryptionState {
 public enum CryptoScheme {
     case PGP
     case UNKNOWN
-    
-    var description: String{
+
+    var description: String {
         switch self {
         case .PGP:
             return "PGP"
@@ -33,8 +33,8 @@ public enum CryptoScheme {
             return ""
         }
     }
-    
-    static func find(i: Int) -> CryptoScheme{
+
+    static func find(i: Int) -> CryptoScheme {
         switch i {
         case 0:
             return CryptoScheme.PGP
@@ -42,7 +42,7 @@ public enum CryptoScheme {
             return CryptoScheme.UNKNOWN
         }
     }
-    func asInt()-> Int16{
+    func asInt() -> Int16 {
         switch self {
         case CryptoScheme.PGP:
             return 0
@@ -52,7 +52,7 @@ public enum CryptoScheme {
     }
 }
 
-public class CryptoObject{
+public class CryptoObject {
     let chiphertext: Data?
     let plaintext: String?
     let decryptedData: Data?
@@ -62,16 +62,16 @@ public class CryptoObject{
     let encType: CryptoScheme
     let passcode: String?
     let signedAdrs: [String]
-    
-    var decryptedText: String?{
-        if let data = decryptedData{
+
+    var decryptedText: String? {
+        if let data = decryptedData {
             return String.init(data: data, encoding: .utf8)
         }
         return nil
     }
-    
-    
-    init(chiphertext: Data?, plaintext: String?, decryptedData: Data?, sigState: SignatureState, encState: EncryptionState, signKey: String?, encType: CryptoScheme, signedAdrs: [String]){
+
+
+    init(chiphertext: Data?, plaintext: String?, decryptedData: Data?, sigState: SignatureState, encState: EncryptionState, signKey: String?, encType: CryptoScheme, signedAdrs: [String]) {
         self.chiphertext = chiphertext
         self.plaintext = plaintext
         self.decryptedData = decryptedData
@@ -82,8 +82,8 @@ public class CryptoObject{
         self.passcode = nil
         self.signedAdrs = signedAdrs
     }
-    
-    
-    
-    
+
+
+
+
 }
diff --git a/enzevalos_iphone/Cryptography.swift b/enzevalos_iphone/Cryptography.swift
index ee9153c65d75c1e62e6e98197a1f9459accceb54..35a2f35793130175a3b1f414de5a89eaef3f34df 100644
--- a/enzevalos_iphone/Cryptography.swift
+++ b/enzevalos_iphone/Cryptography.swift
@@ -8,18 +8,18 @@
 
 import Foundation
 
-public protocol Encryption{
-    
+public protocol Encryption {
+
     // Key handling
     func generateKey(adr: String, new: Bool) -> String
     func importKeys(key: String, pw: String?, isSecretKey: Bool, autocrypt: Bool) throws -> [String]
-    func importKeys(data: Data,  pw: String?, secret: Bool) throws-> [String]
-    func importKeysFromFile(file: String,  pw: String?) throws -> [String]
-    
+    func importKeys(data: Data, pw: String?, secret: Bool) throws -> [String]
+    func importKeysFromFile(file: String, pw: String?) throws -> [String]
+
     func exportKey(id: String, isSecretkey: Bool, autocrypt: Bool, newPasscode: Bool) -> String?
-    
+
     // operations on keys
     func encrypt(plaintext: String, ids: [String], myId: String) -> CryptoObject
     func decrypt(data: Data, decryptionIDs: [String], verifyIds: [String], fromAdr: String?) -> CryptoObject
-    
+
 }
diff --git a/enzevalos_iphone/DataHandler.swift b/enzevalos_iphone/DataHandler.swift
index 82be1c3e91584434c74570207d9eabac8d138ecf..2b41183c75ab37705f173e72fd854f01990d94d1 100644
--- a/enzevalos_iphone/DataHandler.swift
+++ b/enzevalos_iphone/DataHandler.swift
@@ -34,11 +34,11 @@ fileprivate func > <T : Comparable>(lhs: T?, rhs: T?) -> Bool {
 }
 
 
-fileprivate func ==(lhs: NSDate, rhs: NSDate) -> Bool {
+fileprivate func == (lhs: NSDate, rhs: NSDate) -> Bool {
     return lhs === rhs || lhs.compare(rhs as Date) == .orderedSame
 }
 
-fileprivate func <(lhs: NSDate, rhs: NSDate) -> Bool {
+fileprivate func < (lhs: NSDate, rhs: NSDate) -> Bool {
     return lhs.compare(rhs as Date) == .orderedAscending
 
 }
@@ -51,7 +51,7 @@ class DataHandler {
     private var managedObjectContext: NSManagedObjectContext
     private let MaxRecords = 50
     private let MaxMailsPerRecord = 100
-    
+
     var allFolders: [Folder] {
         get {
             var folders = [Folder]()
@@ -168,7 +168,7 @@ class DataHandler {
         save(during: "Terminating")
     }
 
-    func save(during:String) {
+    func save(during: String) {
         do {
             try managedObjectContext.save()
         } catch {
@@ -232,22 +232,22 @@ class DataHandler {
             let name = UserManager.loadUserValue(Attribute.accountname) as? String ?? adr
             _ = getContact(name: name, address: adr, key: keyID, prefer_enc: true)
             if addPk {
-                newPublicKey(keyID: keyID, cryptoType: CryptoScheme.PGP, adr: adr, autocrypt: false)
+                _ = newPublicKey(keyID: keyID, cryptoType: CryptoScheme.PGP, adr: adr, autocrypt: false)
             }
         }
         save(during: "new sk")
         return sk
     }
-    
-    func newSecretKeys(keyIds:[String], addPKs: Bool)-> [SecretKey]{
+
+    func newSecretKeys(keyIds: [String], addPKs: Bool) -> [SecretKey] {
         var sks = [SecretKey]()
-        for id in keyIds{
+        for id in keyIds {
             sks.append(newSecretKey(keyID: id, addPk: addPKs))
         }
         return sks
     }
 
-    func createNewSecretKey(adr: String) -> SecretKey{
+    func createNewSecretKey(adr: String) -> SecretKey {
         let keys = findSecretKeys()
         if keys.count > 0 {
             return findSecretKeys().first!
@@ -262,34 +262,34 @@ class DataHandler {
 
     func newPublicKey(keyID: String, cryptoType: CryptoScheme, adr: String, autocrypt: Bool, firstMail: PersistentMail? = nil, newGenerated: Bool = false) -> PersistentKey {
         var date = Date.init()
-        if let mail = firstMail{
-            if date.compare(mail.date).rawValue > 0{
+        if let mail = firstMail {
+            if date.compare(mail.date).rawValue > 0 {
                 date = mail.date
             }
         }
         let adr = getMailAddress(adr, temporary: false) as! Mail_Address
         var pk: PersistentKey
         if let search = findKey(keyID: keyID) {
-            if search.lastSeen < date{
+            if search.lastSeen < date {
                 search.lastSeen = date
             }
             if autocrypt {
-                if search.lastSeenAutocrypt < date{
+                if search.lastSeenAutocrypt < date {
                     search.lastSeenAutocrypt = date
                 }
                 search.sentOwnPublicKey = true
             }
             search.addToMailaddress(adr)
             pk = search
-                if Logger.logging {
-                    var importChannel = "autocrypt"
-                    if newGenerated {
-                        importChannel = "generated"
-                    } else if !autocrypt {
-                        importChannel = "attachment"
-                    }
-                    Logger.log(discover: pk.keyID, mailAddress: adr, importChannel: importChannel, knownPrivateKey: DataHandler.handler.findSecretKeys().map{($0.keyID ?? "") == keyID}.reduce(false, {$0 || $1}), knownBefore: true)
+            if Logger.logging {
+                var importChannel = "autocrypt"
+                if newGenerated {
+                    importChannel = "generated"
+                } else if !autocrypt {
+                    importChannel = "attachment"
                 }
+                Logger.log(discover: pk.keyID, mailAddress: adr, importChannel: importChannel, knownPrivateKey: DataHandler.handler.findSecretKeys().map { ($0.keyID ?? "") == keyID }.reduce(false, { $0 || $1 }), knownBefore: true)
+            }
         } else {
             pk = NSEntityDescription.insertNewObject(forEntityName: "PersistentKey", into: managedObjectContext) as! PersistentKey
             pk.addToMailaddress(adr)
@@ -299,7 +299,7 @@ class DataHandler {
             pk.discoveryDate = date
             pk.firstMail = firstMail
             if autocrypt {
-                pk.lastSeenAutocrypt = date 
+                pk.lastSeenAutocrypt = date
                 pk.sentOwnPublicKey = true
             }
             var found = false
@@ -312,44 +312,44 @@ class DataHandler {
                 }
             }
             save(during: "new pk")
-                if Logger.logging {
-                    var importChannel = "autocrypt"
-                    if newGenerated {
-                        importChannel = "generated"
-                    } else if !autocrypt {
-                        importChannel = "attachment"
-                    }
-                    Logger.log(discover: pk.keyID, mailAddress: adr, importChannel: importChannel, knownPrivateKey: DataHandler.handler.findSecretKeys().map{($0.keyID ?? "") == keyID}.reduce(false, {$0 || $1}), knownBefore: false)
+            if Logger.logging {
+                var importChannel = "autocrypt"
+                if newGenerated {
+                    importChannel = "generated"
+                } else if !autocrypt {
+                    importChannel = "attachment"
                 }
+                Logger.log(discover: pk.keyID, mailAddress: adr, importChannel: importChannel, knownPrivateKey: DataHandler.handler.findSecretKeys().map { ($0.keyID ?? "") == keyID }.reduce(false, { $0 || $1 }), knownBefore: false)
+            }
         }
-        if let prim = adr.primaryKey, let last = prim.lastSeen, let currentLast = pk.lastSeen{
+        if let prim = adr.primaryKey, let last = prim.lastSeen, let currentLast = pk.lastSeen {
             if last < currentLast {
                 adr.primaryKeyID = pk.keyID
             }
         }
-        else{
+        else {
             adr.primaryKeyID = keyID
         }
         save(during: "new PK")
         return pk
     }
-    
-    func prefSecretKey()->SecretKey{
-        if let prefId = UserManager.loadUserValue(Attribute.prefSecretKeyID){
-            if let id = prefId as? String{
-                if let key =  findSecretKey(keyID: id){
+
+    func prefSecretKey() -> SecretKey {
+        if let prefId = UserManager.loadUserValue(Attribute.prefSecretKeyID) {
+            if let id = prefId as? String {
+                if let key = findSecretKey(keyID: id) {
                     return key
                 }
             }
         }
         var allSKs = findSecretKeys()
-        allSKs = allSKs.sorted(by: {($0.importedDate)!<($1.importedDate)!})
-        if allSKs.count > 0{
+        allSKs = allSKs.sorted(by: { ($0.importedDate)! < ($1.importedDate)! })
+        if allSKs.count > 0 {
             UserManager.storeUserValue(allSKs[0].keyID as AnyObject, attribute: Attribute.prefSecretKeyID)
             return allSKs[0]
         }
-        if let adr = UserManager.loadUserValue(Attribute.userAddr){
-            if let adrString = adr as? String{
+        if let adr = UserManager.loadUserValue(Attribute.userAddr) {
+            if let adrString = adr as? String {
                 return createNewSecretKey(adr: adrString)
             }
         }
@@ -447,33 +447,33 @@ class DataHandler {
         }
         return false
     }
-    
-    func getKeyRecord(addr: String, keyID: String?) -> KeyRecord{
-        if let id = keyID{
-            if let key = findKey(keyID: id){
-                if let record = key.record{
+
+    func getKeyRecord(addr: String, keyID: String?) -> KeyRecord {
+        if let id = keyID {
+            if let key = findKey(keyID: id) {
+                if let record = key.record {
                     return record
                 }
                 // Create KeyRecord
                 let record = NSEntityDescription.insertNewObject(forEntityName: "KeyRecord", into: managedObjectContext) as! KeyRecord
                 record.key = key
-                if let contact = getContact(keyID: id){
+                if let contact = getContact(keyID: id) {
                     record.contact = contact
                 }
-                else{
+                else {
                     record.contact = getContactByAddress(addr)
                 }
                 save(during: "create keyRecord with key")
                 return record
             }
         }
-        
-        if let address = findMailAddress(adr: addr){
-            if let contact = address.contact{
-                for record in contact.records{
-                    if !record.hasKey{
-                        for a in record.addresses{
-                            if a.mailAddress == addr{
+
+        if let address = findMailAddress(adr: addr) {
+            if let contact = address.contact {
+                for record in contact.records {
+                    if !record.hasKey {
+                        for a in record.addresses {
+                            if a.mailAddress == addr {
                                 return record
                             }
                         }
@@ -552,7 +552,7 @@ class DataHandler {
         if let contacts = findAll("EnzevalosContact") {
             for c in contacts {
                 if case let contact as EnzevalosContact = c {
-                    for adr in contact.addresses{
+                    for adr in contact.addresses {
                         if case let mailAdr as Mail_Address = adr {
                             if mailAdr.address == address {
                                 return contact
@@ -579,18 +579,18 @@ class DataHandler {
         let adr = getMailAddress(lowerAdr, temporary: false) as! Mail_Address
         adr.contact = contact
         let cncontacts = AddressHandler.findContact(contact)
-        if cncontacts.count > 0{
+        if cncontacts.count > 0 {
             contact.cnidentifier = cncontacts.first?.identifier
         }
         return contact
     }
-    
-    func getContact(keyID: String)-> EnzevalosContact?{
-        if let key = findKey(keyID: keyID){
-            if let adrs = key.mailaddress{
-                for item in adrs{
+
+    func getContact(keyID: String) -> EnzevalosContact? {
+        if let key = findKey(keyID: keyID) {
+            if let adrs = key.mailaddress {
+                for item in adrs {
                     let adr = item as! Mail_Address
-                    if adr.contact != nil{
+                    if adr.contact != nil {
                         return adr.contact
                     }
                 }
@@ -602,7 +602,7 @@ class DataHandler {
     func getContact(name: String, address: String, key: String, prefer_enc: Bool) -> EnzevalosContact {
         let contact = getContactByAddress(address)
         contact.displayname = name
-        if let mykey = findKey(keyID: key){
+        if let mykey = findKey(keyID: key) {
             contact.getAddress(address)?.addToKeys(mykey)
         }
         return contact
@@ -627,7 +627,7 @@ class DataHandler {
         }
         if let contact = adr.contact {
             if !(contact.addresses.contains(adr)) {
-                    contact.addToAddresses(adr)
+                contact.addToAddresses(adr)
             }
         }
         fromMail.from = adr
@@ -640,10 +640,10 @@ class DataHandler {
     private func handleCCAddresses(_ cc: [MCOAddress], mail: PersistentMail) {
         mail.addToCc(NSSet(array: getMailAddressesByMCOAddresses(cc)))
     }
-    
-    private func findMail(msgID: String) -> PersistentMail?{
-        if let result = find("PersistentMail", type: "messageID", search: msgID) as?[PersistentMail]{
-            if result.count > 0{
+
+    private func findMail(msgID: String) -> PersistentMail? {
+        if let result = find("PersistentMail", type: "messageID", search: msgID) as?[PersistentMail] {
+            if result.count > 0 {
                 return result[0]
             }
         }
@@ -654,7 +654,7 @@ class DataHandler {
     func createMail(_ uid: UInt64, sender: MCOAddress?, receivers: [MCOAddress], cc: [MCOAddress], time: Date, received: Bool, subject: String, body: String?, flags: MCOMessageFlag, record: KeyRecord?, autocrypt: AutocryptContact?, decryptedData: CryptoObject?, folderPath: String, secretKey: String?, references: [String] = [], mailagent: String? = nil, messageID: String? = nil) -> PersistentMail? {
         let myfolder = findFolder(with: folderPath) as Folder
         let finding = findNum("PersistentMail", type: "uid", search: uid)
-        
+
         let mail: PersistentMail
         var mails: [PersistentMail] = []
 
@@ -662,21 +662,21 @@ class DataHandler {
             mails = tmpMails
         }
 
-        if finding == nil || finding!.count == 0 || mails.filter( {$0.folder.path == folderPath && $0.uidvalidity == myfolder.uidvalidity}).count == 0 {
+        if finding == nil || finding!.count == 0 || mails.filter({ $0.folder.path == folderPath && $0.uidvalidity == myfolder.uidvalidity }).count == 0 {
             // create new mail object
             mail = NSEntityDescription.insertNewObject(forEntityName: "PersistentMail", into: managedObjectContext) as! PersistentMail
-            
+
             mail.date = time
             mail.subject = subject
             mail.body = body
-            mail.secretKey  = secretKey
+            mail.secretKey = secretKey
 
             mail.folder = myfolder
             mail.uidvalidity = myfolder.uidvalidity
             mail.uid = uid
             mail.messageID = messageID
             mail.xMailer = mailagent
-            
+
             mail.flag = flags
             // Default values
             mail.isSigned = false
@@ -684,17 +684,17 @@ class DataHandler {
             mail.trouble = false
             mail.unableToDecrypt = false
             mail.received = received
-           
+
             var notStored = ""
-            for reference in references{
-                if let ref = findMail(msgID: reference){
-                   // mail.addToReferenceMails(ref)
+            for reference in references {
+                if let ref = findMail(msgID: reference) {
+                    // mail.addToReferenceMails(ref)
                 }
-                else{
-                    notStored = notStored + " ; "+(reference)
+                else {
+                    notStored = notStored + " ; " + (reference)
                 }
             }
-            if notStored != ""{
+            if notStored != "" {
                 //mail.notLoadedMessages = notStored
             }
 
@@ -744,20 +744,20 @@ class DataHandler {
                 case SignatureState.ValidSignature:
                     mail.isCorrectlySigned = true
                     mail.isSigned = true
-                    if let signedKey = findKey(keyID: decData.signKey!){
+                    if let signedKey = findKey(keyID: decData.signKey!) {
                         mail.signedKey = signedKey
                         mail.keyID = signedKey.keyID
                     }
-                    else{
+                    else {
                         mail.signedKey = newPublicKey(keyID: decData.signKey!, cryptoType: decData.encType, adr: decData.signedAdrs.first!, autocrypt: false, firstMail: mail, newGenerated: false)
                     }
-                   
+
                 }
             }
-                else {
-                    // Maybe PGPInline?
-                    // TODO: Refactoring!
-                    //mail.decryptIfPossible()
+            else {
+                // Maybe PGPInline?
+                // TODO: Refactoring!
+                //mail.decryptIfPossible()
             }
         }
         else {
@@ -768,7 +768,7 @@ class DataHandler {
             myfolder.maxID = mail.uid
         }
         var record = getKeyRecord(addr: mail.from.mailAddress, keyID: nil)
-        if let signedID = mail.signedKey?.keyID{
+        if let signedID = mail.signedKey?.keyID {
             record = getKeyRecord(addr: mail.from.mailAddress, keyID: signedID)
         }
         record.addToPersistentMails(mail)
diff --git a/enzevalos_iphone/DebugSettings.swift b/enzevalos_iphone/DebugSettings.swift
index 10cdfc65d2c2bb4c43014cf56b44e9088eab3995..04826da11c14fe104eb864eddcafb8a0c4e270e8 100644
--- a/enzevalos_iphone/DebugSettings.swift
+++ b/enzevalos_iphone/DebugSettings.swift
@@ -15,112 +15,112 @@ private let datahandler = DataHandler.handler
 let SUPPORT_MAIL_ADR = "letterbox@inf.fu-berlin.de"
 let LOGGING_MAIL_ADR = "letterbox-reports@inf.fu-berlin.de"
 
-func setupStudyPublicKeys(){
+func setupStudyPublicKeys() {
     let logging_pk = "logging_pk"
     let support_pk = "support_pk"
-    let keys = ["noreply@bitcoin.de": "bitcoinde", "letterbox@zedat.fu-berlin.de": support_pk,"letterbox-hilfe@inf.fu-berlin.de": support_pk, "enzevalos@inf.fu-berlin.de": support_pk, SUPPORT_MAIL_ADR: support_pk, LOGGING_MAIL_ADR: logging_pk]
+    let keys = ["noreply@bitcoin.de": "bitcoinde", "letterbox@zedat.fu-berlin.de": support_pk, "letterbox-hilfe@inf.fu-berlin.de": support_pk, "enzevalos@inf.fu-berlin.de": support_pk, SUPPORT_MAIL_ADR: support_pk, LOGGING_MAIL_ADR: logging_pk]
     importPublicKeyDic(keys: keys, type: "asc")
     datahandler.save(during: "init study keys")
 }
 
-func loadTestAcc(){
+func loadTestAcc() {
     //loadAliceEnzevalos()
-   //loadBobEnzevalos()
+    //loadBobEnzevalos()
     //loadAlice2005()
     //loadCharlieEnzevalos()
     //importPublicKeys()
     //loadBob2005()
 
-    
+
 }
 
-func loadUlli(){
-    let user =  web(name: "ullimuelle", pw: "")
+func loadUlli() {
+    let user = web(name: "ullimuelle", pw: "")
     userdefaults(defaults: user)
     importSecretKey(file: "ullimuelle-private", type: "gpg")
-  
+
 }
 
-func loadBob2005(){
+func loadBob2005() {
     let user = web(name: "bob2005", pw: "")
     userdefaults(defaults: user)
     importSecretKey(file: "bob2005-private", type: "gpg")
 }
 
-func loadAlice2005(){
+func loadAlice2005() {
     let user = web(name: "alice2005", pw: "")
     userdefaults(defaults: user)
     importSecretKey(file: "alice2005-private", type: "gpg")
-  
+
 }
 
-func loadBobEnzevalos(){
+func loadBobEnzevalos() {
     let user = enzevalos(name: "bob", pw: "")
     userdefaults(defaults: user)
     importSecretKey(file: "bob_enzvalos_private", type: "asc")
 }
 
 
-func loadCharlieEnzevalos(){
+func loadCharlieEnzevalos() {
     let user = enzevalos(name: "charlie", pw: "")
     userdefaults(defaults: user)
 }
 
-func loadAliceEnzevalos(){
+func loadAliceEnzevalos() {
     let user = enzevalos(name: "alice", pw: "")
     userdefaults(defaults: user)
 }
 
 
 
-private func userdefaults(defaults: [Attribute: AnyObject?]){
-    for (att, value) in defaults{
+private func userdefaults(defaults: [Attribute: AnyObject?]) {
+    for (att, value) in defaults {
         UserManager.storeUserValue(value, attribute: att)
     }
 
 }
 
-private func web(name: String, pw: String) -> [Attribute: AnyObject?]{
-    return  [.accountname : name as AnyObject?, .userName : name as Optional<AnyObject>, .userAddr : name+"@web.de" as Optional<AnyObject>, .userPW : pw as Optional<AnyObject>, .smtpHostname : "smtp.web.de" as Optional<AnyObject>, .smtpPort : 587 as Optional<AnyObject>,  .smtpConnectionType:MCOConnectionType.startTLS.rawValue as AnyObject?, .smtpAuthType:MCOAuthType.saslPlain.rawValue as AnyObject?, .imapHostname : "imap.web.de" as Optional<AnyObject>, .imapPort : 993 as AnyObject?, .imapConnectionType: MCOConnectionType.TLS.rawValue as AnyObject?,.imapAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?]
+private func web(name: String, pw: String) -> [Attribute: AnyObject?] {
+    return [.accountname: name as AnyObject?, .userName: name as Optional<AnyObject>, .userAddr: name + "@web.de" as Optional<AnyObject>, .userPW: pw as Optional<AnyObject>, .smtpHostname: "smtp.web.de" as Optional<AnyObject>, .smtpPort: 587 as Optional<AnyObject>, .smtpConnectionType: MCOConnectionType.startTLS.rawValue as AnyObject?, .smtpAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?, .imapHostname: "imap.web.de" as Optional<AnyObject>, .imapPort: 993 as AnyObject?, .imapConnectionType: MCOConnectionType.TLS.rawValue as AnyObject?, .imapAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?]
 }
 
-private func enzevalos(name: String, pw: String)-> [Attribute: AnyObject?]{
-    return  [.accountname : name as AnyObject?, .userName : name as Optional<AnyObject>, .userAddr : name+"@enzevalos.de" as Optional<AnyObject>, .userPW : pw as Optional<AnyObject>, .smtpHostname : "mail.enzevalos.de" as Optional<AnyObject>, .smtpPort : 465 as Optional<AnyObject>, .smtpConnectionType: MCOConnectionType.TLS.rawValue as AnyObject? ,.smtpAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?,.imapHostname : "mail.enzevalos.de" as Optional<AnyObject>, .imapPort : 993 as AnyObject?, .imapConnectionType:MCOConnectionType.TLS.rawValue as AnyObject?, .imapAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?]
+private func enzevalos(name: String, pw: String) -> [Attribute: AnyObject?] {
+    return [.accountname: name as AnyObject?, .userName: name as Optional<AnyObject>, .userAddr: name + "@enzevalos.de" as Optional<AnyObject>, .userPW: pw as Optional<AnyObject>, .smtpHostname: "mail.enzevalos.de" as Optional<AnyObject>, .smtpPort: 465 as Optional<AnyObject>, .smtpConnectionType: MCOConnectionType.TLS.rawValue as AnyObject?, .smtpAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?, .imapHostname: "mail.enzevalos.de" as Optional<AnyObject>, .imapPort: 993 as AnyObject?, .imapConnectionType: MCOConnectionType.TLS.rawValue as AnyObject?, .imapAuthType: MCOAuthType.saslPlain.rawValue as AnyObject?]
 }
 
 
-func importPublicKeys(){
-    let asc = ["jakob.bode@fu-berlin.de":"JakobBode", "alice@enzevalos.de":"alice_enzevalos_public", "bob@enzevalos.de":"bob_enzevalos_public", "dave@enzevalos.de":"dave_enzevalos_public"]
-    let gpg = ["bob2005@web.de":"bob-public", "ullimuelle@web.de":"ullimuelle-public", "alice2005@web.de":"alice2005-public"]
+func importPublicKeys() {
+    let asc = ["jakob.bode@fu-berlin.de": "JakobBode", "alice@enzevalos.de": "alice_enzevalos_public", "bob@enzevalos.de": "bob_enzevalos_public", "dave@enzevalos.de": "dave_enzevalos_public"]
+    let gpg = ["bob2005@web.de": "bob-public", "ullimuelle@web.de": "ullimuelle-public", "alice2005@web.de": "alice2005-public"]
     importPublicKeyDic(keys: asc, type: "asc")
     importPublicKeyDic(keys: gpg, type: "gpg")
-  
+
 }
 
-func importSecretKey(file: String, type: String){
-    if let path = Bundle.main.path(forResource: file, ofType: type){
+func importSecretKey(file: String, type: String) {
+    if let path = Bundle.main.path(forResource: file, ofType: type) {
         let ids = try! pgp.importKeysFromFile(file: path, pw: nil)
-        for id in ids{
+        for id in ids {
             _ = datahandler.newSecretKey(keyID: id, addPk: true)
         }
     }
 }
 
-private func importPublicKeyDic(keys: [String:String], type: String){
-    for (adr, file) in keys{
+private func importPublicKeyDic(keys: [String: String], type: String) {
+    for (adr, file) in keys {
         importPublicKey(file: file, type: type, adr: adr)
     }
 }
 
-private func importPublicKey(file: String, type: String, adr: String){
-    if let path = Bundle.main.path(forResource: file, ofType: type){
-        do{
+private func importPublicKey(file: String, type: String, adr: String) {
+    if let path = Bundle.main.path(forResource: file, ofType: type) {
+        do {
             let ids = try pgp.importKeysFromFile(file: path, pw: nil)
-            for id in ids{
+            for id in ids {
                 _ = datahandler.newPublicKey(keyID: id, cryptoType: CryptoScheme.PGP, adr: adr, autocrypt: false)
             }
         } catch _ {
-            
+
         }
     }
 }
diff --git a/enzevalos_iphone/EnzevalosContact+CoreDataProperties.swift b/enzevalos_iphone/EnzevalosContact+CoreDataProperties.swift
index c5f4d942a4543685e73eac57d31b8736a02eeb74..01ed76e6267e2cae8c096230be919ab0243de670 100644
--- a/enzevalos_iphone/EnzevalosContact+CoreDataProperties.swift
+++ b/enzevalos_iphone/EnzevalosContact+CoreDataProperties.swift
@@ -27,36 +27,36 @@ extension EnzevalosContact {
 
 // MARK: Generated accessors for addresses
 extension EnzevalosContact {
-    
+
     @objc(addAddressesObject:)
     @NSManaged public func addToAddresses(_ value: Mail_Address)
-    
+
     @objc(removeAddressesObject:)
     @NSManaged public func removeFromAddresses(_ value: Mail_Address)
-    
+
     @objc(addAddresses:)
     @NSManaged public func addToAddresses(_ values: NSSet)
-    
+
     @objc(removeAddresses:)
     @NSManaged public func removeFromAddresses(_ values: NSSet)
-    
+
 }
 
 // MARK: Generated accessors for mailaddress
 extension EnzevalosContact {
-    
+
     @objc(addKeyrecordsObject:)
     @NSManaged public func addToKeyrecords(_ value: KeyRecord)
-    
+
     @objc(removeKeyrecordsObject:)
     @NSManaged public func removeFromKeyrecords(_ value: KeyRecord)
-    
+
     @objc(addKeyrecords:)
     @NSManaged public func addToKeyrecords(_ values: NSSet)
-    
+
     @objc(removeKeyrecords:)
     @NSManaged public func removeFromKeyrecords(_ values: NSSet)
-    
+
 }
 
 
diff --git a/enzevalos_iphone/EphemeralMail.swift b/enzevalos_iphone/EphemeralMail.swift
index a70af7a1726c14968bc4fb0717a29b2470cdc7ff..081bf7813c6562f6a9bc4fcefdd3861ff8ec6d52 100644
--- a/enzevalos_iphone/EphemeralMail.swift
+++ b/enzevalos_iphone/EphemeralMail.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 open class EphemeralMail: Mail {
-    
+
     public var cc: NSSet?
     public var bcc: NSSet?
     public var to: NSSet
diff --git a/enzevalos_iphone/ExportCells.swift b/enzevalos_iphone/ExportCells.swift
index f7e12c3a9936001b56fb70d6179f466720711194..a616ebd82a13a6f6e3e3ea2b29e90319e328ba12 100644
--- a/enzevalos_iphone/ExportCells.swift
+++ b/enzevalos_iphone/ExportCells.swift
@@ -29,7 +29,7 @@ class ExportSecretCell: UITableViewCell {
     @IBOutlet weak var secretRow1: UILabel!
     @IBOutlet weak var secretRow2: UILabel!
     @IBOutlet weak var secretRow3: UILabel!
-    
+
     func setSecretToLabels(secret: String) {
         if secret.count == 44 {
             let cut1 = secret.index(secret.startIndex, offsetBy: 15)
@@ -39,5 +39,5 @@ class ExportSecretCell: UITableViewCell {
             secretRow3.text = String(secret[cut2...])
         }
     }
-    
+
 }
diff --git a/enzevalos_iphone/ExportInfoViewController.swift b/enzevalos_iphone/ExportInfoViewController.swift
index daad6a64db8c2482c7de4ac8ef7fd85b16a29738..f2299fa907ce53adc1902d0c2c6628e056630caf 100644
--- a/enzevalos_iphone/ExportInfoViewController.swift
+++ b/enzevalos_iphone/ExportInfoViewController.swift
@@ -10,11 +10,11 @@ import UIKit
 
 class ExportInfoViewController: UITableViewController {
     let url = "userpage.fu-berlin.de/letterbox/faq.html#otherDevices"
-    
+
     @IBAction func websiteButtonTouch(_ sender: Any) {
-        UIApplication.shared.openURL(URL(string: "https://"+url)!)
+        UIApplication.shared.openURL(URL(string: "https://" + url)!)
     }
-    
+
     override func viewDidLoad() {
         super.viewDidLoad()
         tableView.rowHeight = UITableViewAutomaticDimension
@@ -22,36 +22,36 @@ class ExportInfoViewController: UITableViewController {
         navigationItem.setRightBarButton(navigationItem.rightBarButtonItem, animated: false)
         navigationItem.rightBarButtonItem?.title = NSLocalizedString("Next", comment: "next step")
     }
-    
+
     override func viewWillAppear(_ animated: Bool) {
 //        Logger.queue.async(flags: .barrier) {
-            Logger.log(exportKeyViewOpen: 1)
+        Logger.log(exportKeyViewOpen: 1)
 //        }
         super.viewWillAppear(animated)
     }
-    
+
     override func viewWillDisappear(_ animated: Bool) {
 //        Logger.queue.async(flags: .barrier) {
-            Logger.log(exportKeyViewClose: 1)
+        Logger.log(exportKeyViewClose: 1)
 //        }
         super.viewWillDisappear(animated)
     }
-    
+
     override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         let cell = tableView.dequeueReusableCell(withIdentifier: "ExportInfoCell") as! ExportInfoCell
         cell.infoTextLabel.text = NSLocalizedString("ExportInfoViewText", comment: "")
-        let qrCodeImage = QRCode.generate(input: "https://"+url)
-        
+        let qrCodeImage = QRCode.generate(input: "https://" + url)
+
         let scaleX = cell.qrCode.frame.size.width / qrCodeImage.extent.size.width
         let scaleY = cell.qrCode.frame.size.height / qrCodeImage.extent.size.height
         cell.qrCode.image = UIImage.init(ciImage: qrCodeImage.transformed(by: CGAffineTransform(scaleX: scaleX, y: scaleY)))
         return cell
     }
-    
+
     override func numberOfSections(in tableView: UITableView) -> Int {
         return 1
     }
-    
+
     override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         return 1
     }
diff --git a/enzevalos_iphone/ExportViewController.swift b/enzevalos_iphone/ExportViewController.swift
index fdd880242ce050276b013d4f10ff8c139c056d3b..9b5e3d0141bd703d4c6dbf6f635d52f5ae3ac627 100644
--- a/enzevalos_iphone/ExportViewController.swift
+++ b/enzevalos_iphone/ExportViewController.swift
@@ -12,23 +12,23 @@ class ExportViewController: UITableViewController {
     var alreadySent = false
     var sentToAddress = (UserManager.loadUserValue(Attribute.userAddr) as! String)
     var passcode = ""
-    
+
     override func viewWillDisappear(_ animated: Bool) {
 //        Logger.queue.async(flags: .barrier) {
-            Logger.log(exportKeyViewClose: 2)
+        Logger.log(exportKeyViewClose: 2)
 //        }
         super.viewWillDisappear(animated)
     }
-    
+
     @IBAction func buttonTouched(_ sender: Any) {
 
 //        Logger.queue.async(flags: .barrier) {
-            Logger.log(exportKeyViewButton: !alreadySent)
+        Logger.log(exportKeyViewButton: !alreadySent)
 //        }
-        
+
         let handler = DataHandler.handler
         let ids = handler.findSecretKeys()
-        if ids.count > 0{
+        if ids.count > 0 {
             let id = ids[0]
             let pgp = SwiftPGP()
             if let keyId = id.keyID {
@@ -39,7 +39,7 @@ class ExportViewController: UITableViewController {
                         mailHandler.sendSecretKey(key: message, passcode: passcode, callback: mailSend)
                     }
                 } else {
-                    if let message = pgp.exportKey(id: keyId, isSecretkey: true, autocrypt: true, newPasscode: false){
+                    if let message = pgp.exportKey(id: keyId, isSecretkey: true, autocrypt: true, newPasscode: false) {
                         passcode = pgp.loadExportPasscode(id: keyId)!
                         let mailHandler = AppDelegate.getAppDelegate().mailHandler
                         mailHandler.sendSecretKey(key: message, passcode: passcode, callback: mailSend)
@@ -53,19 +53,19 @@ class ExportViewController: UITableViewController {
         }
         tableView.reloadData()
     }
-    
+
     @IBAction func doneButtonPressed(_ sender: Any) {
         let viewControllers: [UIViewController] = self.navigationController!.viewControllers as [UIViewController]
         self.navigationController!.popToViewController(viewControllers[viewControllers.count - 3], animated: true)
     }
-    
+
     override func numberOfSections(in tableView: UITableView) -> Int {
         if alreadySent {
             return 2
         }
         return 1
     }
-    
+
     override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         if section == 0 {
             return 2
@@ -74,7 +74,7 @@ class ExportViewController: UITableViewController {
         }
         return 0
     }
-    
+
     override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         if indexPath.section == 0 {
             if indexPath.row == 0 {
@@ -102,14 +102,14 @@ class ExportViewController: UITableViewController {
                 }
                 return cell
             }
-            
+
         }
         let cell = tableView.dequeueReusableCell(withIdentifier: "ExportSecretCell") as! ExportSecretCell
         cell.infoTextLabel.text = NSLocalizedString("codeExplanation", comment: "")
         cell.setSecretToLabels(secret: passcode)
         return cell
     }
-    
+
     override func viewDidLoad() {
         super.viewDidLoad()
         tableView.rowHeight = UITableViewAutomaticDimension
@@ -127,12 +127,12 @@ class ExportViewController: UITableViewController {
             }
         }
 
-        
+
 //        Logger.queue.async(flags: .barrier) {
         Logger.log(exportKeyViewOpen: 2)
 //        }
     }
-    
+
     func mailSend(_ error: Error?) {
         if (error != nil) {
             NSLog("Error sending email: \(String(describing: error))")
diff --git a/enzevalos_iphone/FlipTransition.swift b/enzevalos_iphone/FlipTransition.swift
index d1642577ace9a854ee80de3a2af6b1160d9362c7..3d6a6e2fc593743a3b3dd758831f63c04b18e32e 100644
--- a/enzevalos_iphone/FlipTransition.swift
+++ b/enzevalos_iphone/FlipTransition.swift
@@ -31,12 +31,12 @@ class FlipTransition: NSObject, UIViewControllerAnimatedTransitioning {
         toVC.view.layer.transform = CATransform3DMakeRotation(.pi / 2, 0, 1, 0)
 
         UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0, options: .curveEaseOut, animations: { () -> Void in
-            fromVC!.view.layer.transform = CATransform3DMakeRotation(.pi / -2, 0, 1, 0)
-        }) { (finished: Bool) -> Void in
+                fromVC!.view.layer.transform = CATransform3DMakeRotation(.pi / -2, 0, 1, 0)
+            }) { (finished: Bool) -> Void in
             container.bringSubview(toFront: toVC.view)
             UIView.animate(withDuration: self.transitionDuration(using: transitionContext), delay: 0, options: .curveEaseOut, animations: { () -> Void in
-                toVC.view.layer.transform = CATransform3DIdentity
-            }) { (finished: Bool) -> Void in
+                    toVC.view.layer.transform = CATransform3DIdentity
+                }) { (finished: Bool) -> Void in
 
                 fromVC!.view.layer.transform = CATransform3DIdentity
                 transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
diff --git a/enzevalos_iphone/Folder+CoreDataClass.swift b/enzevalos_iphone/Folder+CoreDataClass.swift
index 4d8e496a0daa0c8ae6aed6be0404dd006e9cf634..2762bcf51c86f82cc6dcd7a58d704609ce147091 100644
--- a/enzevalos_iphone/Folder+CoreDataClass.swift
+++ b/enzevalos_iphone/Folder+CoreDataClass.swift
@@ -1,6 +1,6 @@
 //
 //  Folder+CoreDataClass.swift
-//  
+//
 //
 //  Created by Oliver Wiese on 05.07.17.
 //
@@ -12,81 +12,81 @@ import CoreData
 @objc(Folder)
 public class Folder: NSManagedObject {
 
-    var name: String{
-        get{
+    var name: String {
+        get {
             if let n = path.components(separatedBy: delimiter).last {
                 return n
             }
             return path
         }
     }
-    
-    var counterMails: Int{
-        get{
-            if let mails = self.mails{
+
+    var counterMails: Int {
+        get {
+            if let mails = self.mails {
                 return mails.count
             }
             return 0
         }
     }
-    
+
     var frontendName: String {
         get {
             return UserManager.convertToFrontendFolderPath(from: name)
         }
     }
-    
-    var uids: MCOIndexSet{
-    
-        get{
+
+    var uids: MCOIndexSet {
+
+        get {
             let ids = MCOIndexSet()
-            for m in mailsOfFolder{
+            for m in mailsOfFolder {
                 ids.add(m.uid)
             }
             return ids
         }
     }
-    
-   
 
-    var records: [KeyRecord]{
-        get{
-            if let keyRecords = keyRecords as? Set<KeyRecord>{
+
+
+    var records: [KeyRecord] {
+        get {
+            if let keyRecords = keyRecords as? Set<KeyRecord> {
                 return Array(keyRecords).sorted()
             }
             return []
         }
-    
+
     }
-    
-    
-    var mailsOfFolder: [PersistentMail]{
-        get{
+
+
+    var mailsOfFolder: [PersistentMail] {
+        get {
             var ms = [PersistentMail]()
-            if let mymails = mails{
-                if let m = mymails as? Set<PersistentMail>{
+            if let mymails = mails {
+                if let m = mymails as? Set<PersistentMail> {
                     return Array(m)
                 }
-                for case let m as PersistentMail in mymails{
+                for case let m as PersistentMail in mymails {
                     ms.append(m)
                 }
             }
             return ms
         }
     }
-    
+
     var subfolders: [Folder] {
         get {
             var folders: [Folder] = []
             for f in DataHandler.handler.allFolders {
-                if f.path.hasPrefix(path+delimiter) && f.path != path {
+                if f.path.hasPrefix(path + delimiter) && f.path != path {
                     folders.append(f)
                 }
             }
             return folders
         }
     }
-    
+
     /*
     func updateRecords(mail: PersistentMail){
         if let reccords = storedRecords{
diff --git a/enzevalos_iphone/Folder+CoreDataProperties.swift b/enzevalos_iphone/Folder+CoreDataProperties.swift
index 8f90ca6261805abcd66631dedce23bac8b2d5e43..daa80f283bdcc506c9d2d4ee94099dc0cbd810c8 100644
--- a/enzevalos_iphone/Folder+CoreDataProperties.swift
+++ b/enzevalos_iphone/Folder+CoreDataProperties.swift
@@ -1,6 +1,6 @@
 //
 //  Folder+CoreDataProperties.swift
-//  
+//
 //
 //  Created by Oliver Wiese on 05.07.17.
 //
@@ -25,9 +25,9 @@ extension Folder {
     @NSManaged public var pseudonym: String
     @NSManaged public var icon: String
 
-    public var uidvalidity:UInt32?{
+    public var uidvalidity: UInt32? {
         set {
-            if let num = newValue{
+            if let num = newValue {
                 self.willChangeValue(forKey: "uidvalidity")
                 self.setPrimitiveValue(NSDecimalNumber.init(value: num as UInt32), forKey: "uidvalidity")
                 self.didChangeValue(forKey: "uidvalidity")
@@ -37,23 +37,23 @@ extension Folder {
             self.willAccessValue(forKey: "uidvalidity")
             let text = (self.primitiveValue(forKey: "uidvalidity") as? NSDecimalNumber)?.uint32Value
             self.didAccessValue(forKey: "uidvalidity")
-            if let num = text{
+            if let num = text {
                 return num
             }
             return nil
         }
     }
-    
+
 
     @NSManaged public var delimiter: String
-    public var flags: MCOIMAPFolderFlag{
+    public var flags: MCOIMAPFolderFlag {
         get {
             self.willAccessValue(forKey: "flags")
             let ms = self.primitiveValue(forKey: "flags")
-            
+
             self.didAccessValue(forKey: "flags")
-            if let num = ms{
-                if case let i as Int = num{
+            if let num = ms {
+                if case let i as Int = num {
                     return MCOIMAPFolderFlag.init(rawValue: i)
                 }
             }
@@ -65,9 +65,9 @@ extension Folder {
             self.didChangeValue(forKey: "flags")
         }
     }
-    
-    public var maxID: UInt64{
-        
+
+    public var maxID: UInt64 {
+
         set {
             self.willChangeValue(forKey: "maxID")
             self.setPrimitiveValue(NSDecimalNumber.init(value: newValue as UInt64), forKey: "maxID")
@@ -77,7 +77,7 @@ extension Folder {
             self.willAccessValue(forKey: "maxID")
             let text = (self.primitiveValue(forKey: "maxID") as? NSDecimalNumber)?.uint64Value
             self.didAccessValue(forKey: "maxID")
-            if text == nil{
+            if text == nil {
                 return 1
             }
             return text!
@@ -93,16 +93,16 @@ extension Folder {
 
     @objc(removeMailsObject:)
     @NSManaged public func removeFromMails(_ value: PersistentMail)
-    
+
     @objc(addSubfolderObject:)
     @NSManaged public func addToSubfolder(_ value: Folder)
-    
+
     @objc(removeSubfolderObject:)
     @NSManaged public func removeFromSubfolder(_ value: Folder)
-    
+
     @objc(addKeyRecordsObject:)
     @NSManaged public func addToKeyRecords(_ value: KeyRecord)
-    
+
     @objc(removeKeyRecordsObject:)
     @NSManaged public func removeFromKeyRecords(_ value: KeyRecord)
 
@@ -111,27 +111,27 @@ extension Folder {
 
     @objc(removeMails:)
     @NSManaged public func removeFromMails(_ values: NSSet)
-    
+
     @objc(addSubfolder:)
     @NSManaged public func addToSubfolder(_ values: NSSet)
-    
+
     @objc(removeSubfolder:)
     @NSManaged public func removeFromSubfolder(_ values: NSSet)
-    
+
     @objc(addKeyRecords:)
     @NSManaged public func addToKeyRecords(_ values: NSSet)
-    
+
     @objc(removeKeyRecords:)
     @NSManaged public func removeFromKeyRecords(_ values: NSSet)
 
 }
 
 extension Folder: Comparable {
-    public static func <(lhs: Folder, rhs: Folder) -> Bool {
+    public static func < (lhs: Folder, rhs: Folder) -> Bool {
         return lhs.name < rhs.name
     }
-    
-    public static func ==(lhs: Folder, rhs: Folder) -> Bool {
+
+    public static func == (lhs: Folder, rhs: Folder) -> Bool {
         return lhs.name == rhs.name && lhs.path == rhs.path
     }
 }
diff --git a/enzevalos_iphone/FolderListCell.swift b/enzevalos_iphone/FolderListCell.swift
index 1dd94d8c9db372e6437e690a046ba5bf39eb0f6b..d54f32cddcf47715ad8ebdfcb6f4ee799a722f4a 100644
--- a/enzevalos_iphone/FolderListCell.swift
+++ b/enzevalos_iphone/FolderListCell.swift
@@ -17,5 +17,5 @@ class FolderListCell: UITableViewCell {
     @IBOutlet weak var markImageView: UIImageView!
     @IBOutlet weak var replyImageView: UIImageView!
     @IBOutlet weak var stackView: UIStackView!
-    
+
 }
diff --git a/enzevalos_iphone/FolderViewController.swift b/enzevalos_iphone/FolderViewController.swift
index 747352a332da31b6d0f70106c03bf9e35c361f8a..baee58107f5d46ffc70e02121c5f2f8ff156ebb6 100644
--- a/enzevalos_iphone/FolderViewController.swift
+++ b/enzevalos_iphone/FolderViewController.swift
@@ -23,10 +23,10 @@ class FolderViewController: UITableViewController {
             lastUpdateLabel.sizeToFit()
         }
     }
-    
+
     var lastUpdate: Date? = Date()
     let dateFormatter = DateFormatter()
-    
+
     override func viewDidLoad() {
         self.refreshControl?.addTarget(self, action: #selector(FolderViewController.refresh), for: UIControlEvents.valueChanged)
         self.refreshControl?.attributedTitle = NSAttributedString(string: NSLocalizedString("PullToRefresh", comment: "Pull to refresh"))
@@ -50,10 +50,10 @@ class FolderViewController: UITableViewController {
             self?.lastUpdate = Date()
             self?.tableView.reloadData()
         })
-        
+
         dateFormatter.locale = Locale.current
         dateFormatter.timeStyle = .medium
-        
+
         lastUpdateLabel.sizeToFit()
         lastUpdateLabel.backgroundColor = UIColor.clear
         lastUpdateLabel.textAlignment = .center
@@ -208,7 +208,7 @@ class FolderViewController: UITableViewController {
         refreshControl?.endRefreshing()
         lastUpdateText = lastUpdate != nil ? "\(NSLocalizedString("LastUpdate", comment: "When the last update occured")): \(dateFormatter.string(from: lastUpdate!))" : NSLocalizedString("NeverUpdated", comment: "No internet connection since last launch")
     }
-   
+
     func getImage(for path: String) -> UIImage {
         if path == UserManager.frontendInboxFolderPath {
             return #imageLiteral(resourceName: "Inbox")
diff --git a/enzevalos_iphone/FrequentCell.swift b/enzevalos_iphone/FrequentCell.swift
index 9067ee4f6c4d3394a83fb836fa62edeab22f06b9..53a5f82e515975b664e943116e32d2d16314e629 100644
--- a/enzevalos_iphone/FrequentCell.swift
+++ b/enzevalos_iphone/FrequentCell.swift
@@ -8,51 +8,51 @@
 
 import UIKit
 
-class FrequentCell : UICollectionViewCell {
+class FrequentCell: UICollectionViewCell {
     @IBOutlet weak var img: UIImageView!
     @IBOutlet weak var name: UILabel!
     @IBOutlet weak var type: UIImageView!
     @IBOutlet weak var background: UIImageView!
-    
+
     var address = ""
     var identifier = ""
-    
+
     override init(frame: CGRect) {
         super.init(frame: frame)
         self.frame = CGRect.init(x: 0, y: 0, width: 90, height: 100)
     }
-    
+
     required init?(coder aDecoder: NSCoder) {
         super.init(coder: aDecoder)
         self.frame = CGRect.init(x: 0, y: 33, width: 90, height: 100)
     }
-    
-    func drawBackgroud(_ color : UIColor){
+
+    func drawBackgroud(_ color: UIColor) {
         var myBounds = CGRect()
         myBounds.size.width = 70
         myBounds.size.height = 70
         UIGraphicsBeginImageContextWithOptions(myBounds.size, false, 2) //try 200 here
-        
+
         let context = UIGraphicsGetCurrentContext()
-        
+
         //
         // Clip context to a circle
         //
         let path = CGPath(ellipseIn: myBounds, transform: nil);
         context!.addPath(path);
         context!.clip();
-        
-        
+
+
         //
         // Fill background of context
         //
         context!.setFillColor(color.cgColor)
         context!.fill(CGRect(x: 0, y: 0, width: myBounds.size.width, height: myBounds.size.height));
-        
+
         let snapshot = UIGraphicsGetImageFromCurrentImageContext();
         UIGraphicsEndImageContext();
-        
+
         self.background.image = snapshot
     }
-    
+
 }
diff --git a/enzevalos_iphone/GamificationData.swift b/enzevalos_iphone/GamificationData.swift
index 73e3340ce2e1f38b4006deaac4606499fb60ef33..458473be1fbbd1e8e2b0c746f165de00d5d21960 100755
--- a/enzevalos_iphone/GamificationData.swift
+++ b/enzevalos_iphone/GamificationData.swift
@@ -142,7 +142,7 @@ class GamificationData: NSObject {
 
      **Returns** the boolean Value whether the Badge is **Achieved (true)** or not (false)
      */
-    func badgeAchieved(badge : Badges) -> Bool {
+    func badgeAchieved(badge: Badges) -> Bool {
         // Check if Subbadges are Finished
         let subBadges = self.subBadgesforBadge(badge: badge.type)
         for element in subBadges {
diff --git a/enzevalos_iphone/GamificationDataUnitTest.swift b/enzevalos_iphone/GamificationDataUnitTest.swift
index 44bd769b3cac4835bb47eb9f62f35b91873c04e3..c6d593b5d7e31faf171d75e8689cd986c4e58a1e 100755
--- a/enzevalos_iphone/GamificationDataUnitTest.swift
+++ b/enzevalos_iphone/GamificationDataUnitTest.swift
@@ -10,15 +10,15 @@ import XCTest
 @testable import enzevalos_iphone
 
 class GamificationDataUnitTest: XCTestCase {
-    var badges : [Badges]!
-    
+    var badges: [Badges]!
+
     override func setUp() {
         super.setUp()
         badges = GamificationData.sharedInstance.badges
 
         // Put setup code here. This method is called before the invocation of each test method in the class.
     }
-    
+
     override func tearDown() {
         // Put teardown code here. This method is called after the invocation of each test method in the class.
         super.tearDown()
@@ -26,12 +26,12 @@ class GamificationDataUnitTest: XCTestCase {
     }
 
 
-    func testBadgePictures(){
+    func testBadgePictures() {
         // tests if all image Names are correct and can be loaded
         for e in badges {
             // Test Main Badges
             let bundle = Bundle(for: type(of: self))
-            
+
             let imageOn = UIImage.init(named: e.onName, in: bundle, compatibleWith: nil)
             XCTAssert(imageOn != nil, "Image \(e.onName) failed")
             let imageOff = UIImage.init(named: e.offName, in: bundle, compatibleWith: nil)
@@ -53,11 +53,11 @@ class GamificationDataUnitTest: XCTestCase {
 
     }
 
-    func testWidth(){
+    func testWidth() {
         let arrow = ArrowView()
         let circle = CircleView()
 
-         XCTAssert( arrow.width == circle.width , "LineStrokes not identical")
+        XCTAssert(arrow.width == circle.width, "LineStrokes not identical")
 
     }
     /*
@@ -67,5 +67,5 @@ class GamificationDataUnitTest: XCTestCase {
             // Put the code you want to measure the time of here.
         }
     }*/
-    
+
 }
diff --git a/enzevalos_iphone/IconsStyleKit.swift b/enzevalos_iphone/IconsStyleKit.swift
index 4c9e594e5557ab2ad016b0e18feb8d7f4b48e7d1..1e5f96586bd1d4efeec50c97402dc9f5d4dcbf06 100644
--- a/enzevalos_iphone/IconsStyleKit.swift
+++ b/enzevalos_iphone/IconsStyleKit.swift
@@ -15,7 +15,7 @@
 
 import UIKit
 
-open class IconsStyleKit : NSObject {
+open class IconsStyleKit: NSObject {
 
     //// Cache
 
@@ -42,7 +42,7 @@ open class IconsStyleKit : NSObject {
     @objc open dynamic class func drawLetter(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 50, height: 35), resizing: ResizingBehavior = .aspectFit, color: UIColor = IconsStyleKit.strokeColor, fillBackground: Bool = false) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 50, height: 35), target: targetFrame)
@@ -90,7 +90,7 @@ open class IconsStyleKit : NSObject {
         color.setStroke()
         bezier3Path.lineWidth = 2
         bezier3Path.stroke()
-        
+
         context.restoreGState()
 
     }
@@ -98,7 +98,7 @@ open class IconsStyleKit : NSObject {
     @objc open dynamic class func drawLetterCorrupted(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 49, height: 34), resizing: ResizingBehavior = .aspectFit, color: UIColor = IconsStyleKit.strokeColor) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 49, height: 34), target: targetFrame)
@@ -198,7 +198,7 @@ open class IconsStyleKit : NSObject {
         color.setStroke()
         bezier8Path.lineWidth = 1.5
         bezier8Path.stroke()
-        
+
         context.restoreGState()
 
     }
@@ -206,7 +206,7 @@ open class IconsStyleKit : NSObject {
     @objc open dynamic class func drawPostcard(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 49, height: 34), resizing: ResizingBehavior = .aspectFit, color: UIColor = IconsStyleKit.strokeColor, fillBackground: Bool = false) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 49, height: 34), target: targetFrame)
@@ -330,21 +330,21 @@ open class IconsStyleKit : NSObject {
         bezier10Path.close()
         color.setFill()
         bezier10Path.fill()
-        
+
         context.restoreGState()
 
     }
-    
+
     @objc open dynamic class func drawLetterOpen(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 47, height: 43), resizing: ResizingBehavior = .aspectFit, color: UIColor = IconsStyleKit.strokeColor) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 47, height: 43), target: targetFrame)
         context.translateBy(x: resizedFrame.minX, y: resizedFrame.minY)
         context.scaleBy(x: resizedFrame.width / 47, y: resizedFrame.height / 43)
-        
+
         //// Group
         //// Bezier Drawing
         let bezierPath = UIBezierPath()
@@ -404,8 +404,8 @@ open class IconsStyleKit : NSObject {
         bezierPath.usesEvenOddFillRule = true
         color.setFill()
         bezierPath.fill()
-        
-        
+
+
         //// Bezier 2 Drawing
         let bezier2Path = UIBezierPath()
         bezier2Path.move(to: CGPoint(x: 2.96, y: 15.51))
@@ -417,8 +417,8 @@ open class IconsStyleKit : NSObject {
         color.setStroke()
         bezier2Path.lineWidth = 1.5
         bezier2Path.stroke()
-        
-        
+
+
         //// Bezier 4 Drawing
         let bezier4Path = UIBezierPath()
         bezier4Path.move(to: CGPoint(x: 11.09, y: 22.41))
@@ -428,8 +428,8 @@ open class IconsStyleKit : NSObject {
         color.setStroke()
         bezier4Path.lineWidth = 1.5
         bezier4Path.stroke()
-        
-        
+
+
         //// Bezier 3 Drawing
         let bezier3Path = UIBezierPath()
         bezier3Path.move(to: CGPoint(x: 6, y: 6.25))
@@ -442,7 +442,7 @@ open class IconsStyleKit : NSObject {
         bezier3Path.lineWidth = 1.5
         bezier3Path.lineCapStyle = .round
         bezier3Path.stroke()
-        
+
         context.restoreGState()
     }
 
@@ -454,7 +454,7 @@ open class IconsStyleKit : NSObject {
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 50, height: 35), false, 0)
-            IconsStyleKit.drawLetter()
+        IconsStyleKit.drawLetter()
 
         Cache.imageOfLetter = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
@@ -466,23 +466,23 @@ open class IconsStyleKit : NSObject {
         if Cache.imageOfLetterBG != nil {
             return Cache.imageOfLetterBG!
         }
-        
+
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 50, height: 35), false, 0)
         IconsStyleKit.drawLetter(fillBackground: true)
-        
+
         Cache.imageOfLetterBG = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
-        
+
         return Cache.imageOfLetterBG!
     }
-    
+
     @objc open dynamic class var imageOfLetterCorrupted: UIImage {
         if Cache.imageOfLetterCorrupted != nil {
             return Cache.imageOfLetterCorrupted!
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 49, height: 34), false, 0)
-            IconsStyleKit.drawLetterCorrupted()
+        IconsStyleKit.drawLetterCorrupted()
 
         Cache.imageOfLetterCorrupted = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
@@ -496,39 +496,39 @@ open class IconsStyleKit : NSObject {
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 49, height: 34), false, 0)
-            IconsStyleKit.drawPostcard()
+        IconsStyleKit.drawPostcard()
 
         Cache.imageOfPostcard = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
 
         return Cache.imageOfPostcard!
     }
-    
+
     @objc open dynamic class var imageOfPostcardBG: UIImage {
         if Cache.imageOfPostcardBG != nil {
             return Cache.imageOfPostcardBG!
         }
-        
+
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 49, height: 34), false, 0)
         IconsStyleKit.drawPostcard(fillBackground: true)
-        
+
         Cache.imageOfPostcardBG = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
-        
+
         return Cache.imageOfPostcardBG!
     }
-    
+
     @objc open dynamic class var imageOfLetterOpen: UIImage {
         if Cache.imageOfLetterOpen != nil {
             return Cache.imageOfLetterOpen!
         }
-        
+
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 47, height: 43), false, 0)
         IconsStyleKit.drawLetterOpen()
-        
+
         Cache.imageOfLetterOpen = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
-        
+
         return Cache.imageOfLetterOpen!
     }
 
@@ -591,17 +591,17 @@ open class IconsStyleKit : NSObject {
             scales.height = abs(target.height / rect.height)
 
             switch self {
-                case .aspectFit:
-                    scales.width = min(scales.width, scales.height)
-                    scales.height = scales.width
-                case .aspectFill:
-                    scales.width = max(scales.width, scales.height)
-                    scales.height = scales.width
-                case .stretch:
-                    break
-                case .center:
-                    scales.width = 1
-                    scales.height = 1
+            case .aspectFit:
+                scales.width = min(scales.width, scales.height)
+                scales.height = scales.width
+            case .aspectFill:
+                scales.width = max(scales.width, scales.height)
+                scales.height = scales.width
+            case .stretch:
+                break
+            case .center:
+                scales.width = 1
+                scales.height = 1
             }
 
             var result = rect.standardized
diff --git a/enzevalos_iphone/InboxCellDelegator.swift b/enzevalos_iphone/InboxCellDelegator.swift
index 0ec7ed55460b99a6e8e36f3e82dfdd22cba0d0b9..c1a46cfef6019456e1899d2ea87d708b4487b291 100644
--- a/enzevalos_iphone/InboxCellDelegator.swift
+++ b/enzevalos_iphone/InboxCellDelegator.swift
@@ -7,7 +7,7 @@
 //
 
 protocol InboxCellDelegator: class {
-    
+
     func callSegueFromCell(_ mail: PersistentMail?)
     func callSegueFromCell2(_ contact: KeyRecord?)
     func callSegueToContact(_ contact: KeyRecord?)
diff --git a/enzevalos_iphone/InboxViewController.swift b/enzevalos_iphone/InboxViewController.swift
index 37f7ecd2dd233551caae79dfd05ae85e0e92d07f..704893d64e07a5147eb76888b36d6d63bbc4030c 100644
--- a/enzevalos_iphone/InboxViewController.swift
+++ b/enzevalos_iphone/InboxViewController.swift
@@ -224,12 +224,12 @@ class InboxViewController: UITableViewController, InboxCellDelegator {
     func filterContentForSearchText(_ searchText: String, scope: Int = 0) {
         var records = [KeyRecord]()
         if scope == 0 || scope == 3 {
-            records += folder.records.filter({ ( record: KeyRecord) -> Bool in
+            records += folder.records.filter({ (record: KeyRecord) -> Bool in
                 return record.name.lowercased().contains(searchText.lowercased())
             })
         }
         if scope == 1 || scope == 3 {
-            records += folder.records.filter({ ( record: KeyRecord) -> Bool in
+            records += folder.records.filter({ (record: KeyRecord) -> Bool in
                 let mails = record.inboxMails
                 return mails.filter({ (mail: PersistentMail) -> Bool in
                     mail.subject?.lowercased().contains(searchText.lowercased()) ?? false
@@ -237,7 +237,7 @@ class InboxViewController: UITableViewController, InboxCellDelegator {
             })
         }
         if scope == 2 || scope == 3 {
-            records += folder.records.filter({ ( record: KeyRecord) -> Bool in
+            records += folder.records.filter({ (record: KeyRecord) -> Bool in
                 let mails = record.inboxMails
                 return mails.filter({ (mail: PersistentMail) -> Bool in
                     if let decryptedBody = mail.decryptedBody {
diff --git a/enzevalos_iphone/Invitation/InvitationHelper.swift b/enzevalos_iphone/Invitation/InvitationHelper.swift
index 14571d03a7cc94529e31cd096986c62171a6a1f3..ebdfea3424998d9416cee4974bd60d1f5f053b27 100644
--- a/enzevalos_iphone/Invitation/InvitationHelper.swift
+++ b/enzevalos_iphone/Invitation/InvitationHelper.swift
@@ -10,94 +10,94 @@ import UIKit
 
 // MARK: - UserDefaults
 
-enum InvitationUserDefaults				: String {
+enum InvitationUserDefaults: String {
 
-	case shouldNotShowFirstDialog		= "Invitation_shouldNotShowFirstDialog"
-	case shouldNotShowSecondDialog		= "Invitation_shouldNotShowSecondDialog"
+    case shouldNotShowFirstDialog = "Invitation_shouldNotShowFirstDialog"
+    case shouldNotShowSecondDialog = "Invitation_shouldNotShowSecondDialog"
 
-	var bool: Bool {
-		return UserDefaults.standard.bool(forKey: self.rawValue)
-	}
+    var bool: Bool {
+        return UserDefaults.standard.bool(forKey: self.rawValue)
+    }
 
-	func set(_ value: Bool) {
-		UserDefaults.standard.set(value, forKey: self.rawValue)
-		UserDefaults.standard.synchronize()
-	}
+    func set(_ value: Bool) {
+        UserDefaults.standard.set(value, forKey: self.rawValue)
+        UserDefaults.standard.synchronize()
+    }
 }
 
 // MARK: - Extensions
 
 extension String {
 
-	func words(inRange range: NSRange) -> (words: String, extendedRange: NSRange)? {
+    func words(inRange range: NSRange) -> (words: String, extendedRange: NSRange)? {
 
-		let strings = self.components(separatedBy: .whitespacesAndNewlines)
-		var result = [(word: String, index: Int)]()
+        let strings = self.components(separatedBy: .whitespacesAndNewlines)
+        var result = [(word: String, index: Int)]()
 
-		var index = 0
-		let start = range.location
-		let length = range.length
+        var index = 0
+        let start = range.location
+        let length = range.length
 
-		for string in strings {
+        for string in strings {
 
-			guard (index < start + length) else {
-				break
-			}
+            guard (index < start + length) else {
+                break
+            }
 
-			guard (index + string.count >= start) else {
-				index += (1 + string.count)
-				continue
-			}
+            guard (index + string.count >= start) else {
+                index += (1 + string.count)
+                continue
+            }
 
-			result.append((word: string, index: index))
-			index += (1 + string.count)
-		}
+            result.append((word: string, index: index))
+            index += (1 + string.count)
+        }
 
-		let string = result
-			.map { (word, index) -> String in
-				return word
-			}.joined(separator: " ")
+        let string = result
+            .map { (word, index) -> String in
+                return word
+            }.joined(separator: " ")
 
-		guard let startIndex = result.first?.index else {
-			return nil
-		}
+        guard let startIndex = result.first?.index else {
+            return nil
+        }
 
-		let wordsRange = NSRange(location: startIndex, length: string.count)
-		let words = (self as NSString).substring(with: wordsRange)
+        let wordsRange = NSRange(location: startIndex, length: string.count)
+        let words = (self as NSString).substring(with: wordsRange)
 
-		return (words, wordsRange)
-	}
+        return (words, wordsRange)
+    }
 
-	var urlString: String? {
-		return self.addingPercentEncoding(withAllowedCharacters: .alphanumerics)
-	}
+    var urlString: String? {
+        return self.addingPercentEncoding(withAllowedCharacters: .alphanumerics)
+    }
 }
 
 extension NSRange {
 
-	func isInRange(of range: NSRange) -> Bool {
+    func isInRange(of range: NSRange) -> Bool {
 
-		return self.contains(range.location) || range.contains(self.location)
-	}
+        return self.contains(range.location) || range.contains(self.location)
+    }
 }
 
 extension UIView {
 
-	func roundRect(_ radius: CGFloat) {
-		self.layer.cornerRadius = radius
-		self.layer.masksToBounds = true
-	}
+    func roundRect(_ radius: CGFloat) {
+        self.layer.cornerRadius = radius
+        self.layer.masksToBounds = true
+    }
 
-	func roundRect() {
-		self.roundRect(self.frame.height / 2)
-	}
+    func roundRect() {
+        self.roundRect(self.frame.height / 2)
+    }
 }
 
 extension UIColor {
 
-	struct Invitation {
+    struct Invitation {
 
-		static let gray 	= #colorLiteral(red: 0.2392156863, green: 0.2392156863, blue: 0.2392156863, alpha: 1)
-		static let orange	= #colorLiteral(red: 1, green: 0.7058823529, blue: 0.2549019608, alpha: 1)
-	}
+        static let gray = #colorLiteral(red: 0.2392156863, green: 0.2392156863, blue: 0.2392156863, alpha: 1)
+        static let orange = #colorLiteral(red: 1, green: 0.7058823529, blue: 0.2549019608, alpha: 1)
+    }
 }
diff --git a/enzevalos_iphone/KeyRecord+CoreDataClass.swift b/enzevalos_iphone/KeyRecord+CoreDataClass.swift
index 5410b9e465d75655fd2e4c7ff68423b2c1d2b815..701494267901a83f06014bf3051f1b6977558def 100644
--- a/enzevalos_iphone/KeyRecord+CoreDataClass.swift
+++ b/enzevalos_iphone/KeyRecord+CoreDataClass.swift
@@ -15,57 +15,57 @@ import UIKit
 @objc(KeyRecord)
 public class KeyRecord: NSManagedObject, Record {
 
-    
-    public var name: String{
-        get{
+
+    public var name: String {
+        get {
             return self.ezContact.name
         }
     }
-    
-    public var hasKey: Bool{
-        get{
+
+    public var hasKey: Bool {
+        get {
             return key != nil
         }
     }
-    
-    public var isSecure: Bool{
-        get{
+
+    public var isSecure: Bool {
+        get {
             return hasKey
         }
     }
-    
-    public var isVerified: Bool{
-        get{
-            if let k = key{
+
+    public var isVerified: Bool {
+        get {
+            if let k = key {
                 return k.isVerified()
             }
             return false
         }
     }
-    
-    public var keyID: String?{
-        if let k = key{
+
+    public var keyID: String? {
+        if let k = key {
             return k.keyID
         }
         return nil
     }
-    
-    public var cryptoscheme: CryptoScheme{
-        get{
-            if let k = key{
+
+    public var cryptoscheme: CryptoScheme {
+        get {
+            if let k = key {
                 return k.encryptionType
             }
             return CryptoScheme.UNKNOWN
         }
     }
-    
-    public var fingerprint: String?{
-        get{
-            if let k = pgpKey{
-                if let pk = k.publicKey{
+
+    public var fingerprint: String? {
+        get {
+            if let k = pgpKey {
+                if let pk = k.publicKey {
                     return pk.fingerprint.description()
                 }
-                else if let sk = k.secretKey{
+                else if let sk = k.secretKey {
                     return sk.fingerprint.description()
                 }
                 return k.keyID.longIdentifier
@@ -73,95 +73,95 @@ public class KeyRecord: NSManagedObject, Record {
             return nil
         }
     }
-    
-    private var pgpKey: Key?{
-        get{
-            if let id = key?.keyID{
+
+    private var pgpKey: Key? {
+        get {
+            if let id = key?.keyID {
                 let pgp = SwiftPGP()
                 return pgp.loadKey(id: id)
             }
             return nil
         }
     }
-    
-    public var ezContact: EnzevalosContact{
-        get{
+
+    public var ezContact: EnzevalosContact {
+        get {
             return contact
         }
     }
-    
-    public var mails: [PersistentMail]{
-        get{
-            if let m = persistentMails as? Set<PersistentMail>{
+
+    public var mails: [PersistentMail] {
+        get {
+            if let m = persistentMails as? Set<PersistentMail> {
                 return Array(m).sorted()
             }
             return []
         }
     }
-    
-    public var cnContact: CNContact?{
-        get{
+
+    public var cnContact: CNContact? {
+        get {
             return contact.cnContact
         }
     }
-    
-    public var color: UIColor{
-        get{
+
+    public var color: UIColor {
+        get {
             return contact.getColor()
         }
     }
-    
-    public var image: UIImage{
-        get{
+
+    public var image: UIImage {
+        get {
             return contact.getImageOrDefault()
 
         }
     }
-    
-    public var addresses: [MailAddress]{
-        get{
-            if let k = key{
-                if let addrs = k.mailaddress as? Set<Mail_Address>{
+
+    public var addresses: [MailAddress] {
+        get {
+            if let k = key {
+                if let addrs = k.mailaddress as? Set<Mail_Address> {
                     return Array(addrs)
                 }
                 return []
             }
-            if let addrs = contact.addresses as? Set<Mail_Address>{
+            if let addrs = contact.addresses as? Set<Mail_Address> {
                 return Array(addrs)
             }
             return []
         }
     }
-    
-    var addressNames:[String]{
-        get{
+
+    var addressNames: [String] {
+        get {
             let adrs = addresses
             var names = [String]()
-            for adr in adrs{
+            for adr in adrs {
                 names.append(adr.mailAddress)
             }
             return names
         }
     }
-    
-    public func verify(){
-        if let k = key{
+
+    public func verify() {
+        if let k = key {
             k.verify()
         }
     }
-    
-    public func match(mail: PersistentMail) -> Bool{
-        if mail.folder == folder{
-            if let recordFingerprint = fingerprint, let signedKey = mail.signedKey{
+
+    public func match(mail: PersistentMail) -> Bool {
+        if mail.folder == folder {
+            if let recordFingerprint = fingerprint, let signedKey = mail.signedKey {
                 let pgp = SwiftPGP()
-                if let key = pgp.loadKey(id: signedKey.keyID)?.publicKey{
+                if let key = pgp.loadKey(id: signedKey.keyID)?.publicKey {
                     return key.fingerprint.description() == recordFingerprint
                 }
                 return false
             }
-            if !hasKey && !mail.isSigned{
-                for addr in addresses{
-                    if mail.from.mailAddress == addr.mailAddress{
+            if !hasKey && !mail.isSigned {
+                for addr in addresses {
+                    if mail.from.mailAddress == addr.mailAddress {
                         return true
                     }
                 }
@@ -170,24 +170,24 @@ public class KeyRecord: NSManagedObject, Record {
         }
         return false
     }
-    
-    public func mailsInFolder(folder: Folder) -> [PersistentMail]{
+
+    public func mailsInFolder(folder: Folder) -> [PersistentMail] {
         let folderMails = DataHandler.handler.allMailsInFolder(key: keyID, contact: ezContact, folder: folder, isSecure: isSecure)
-        if folderMails.count == 0{
+        if folderMails.count == 0 {
             folder.removeFromKeyRecords(self)
         }
         let set = Set<PersistentMail>(folderMails)
         return Array(set).sorted()
     }
-    
-    
-    public var inboxMails: [PersistentMail]{
-        get{
+
+
+    public var inboxMails: [PersistentMail] {
+        get {
             let inbox = DataHandler.handler.findFolder(with: UserManager.backendInboxFolderPath)
             return mailsInFolder(folder: inbox)
         }
     }
-    
+
 
 }
 
@@ -198,12 +198,12 @@ private func isEmpty(_ contact: KeyRecord) -> Bool {
 
 
 public func == (lhs: KeyRecord, rhs: KeyRecord) -> Bool {
-    if lhs.hasKey && rhs.hasKey{
-        if let keyLHS = lhs.key, let keyRHS = rhs.key{
+    if lhs.hasKey && rhs.hasKey {
+        if let keyLHS = lhs.key, let keyRHS = rhs.key {
             return keyLHS.keyID == keyRHS.keyID
         }
     }
-    if lhs.hasKey != rhs.hasKey{
+    if lhs.hasKey != rhs.hasKey {
         return false
     }
     return lhs.contact == rhs.contact
diff --git a/enzevalos_iphone/KeyViewController.swift b/enzevalos_iphone/KeyViewController.swift
index 74b6a94019b015084961888546e9ed817ff02c80..662edef0e7d3435c3cd632cae515ce154802cc37 100644
--- a/enzevalos_iphone/KeyViewController.swift
+++ b/enzevalos_iphone/KeyViewController.swift
@@ -12,7 +12,7 @@ class KeyViewController: UIViewController {
 
     @IBOutlet var tableView: UITableView!
     @IBOutlet weak var copyButton: UIButton!
-    
+
     var openDate: Date = Date() //used for logging issues [see Logger.log(keyViewClose keyID:String, timevisited: Date)]
 
     var record: KeyRecord?
@@ -24,9 +24,9 @@ class KeyViewController: UIViewController {
         tableView.estimatedRowHeight = 100
         openDate = Date()
 //        Logger.queue.async(flags: .barrier) {
-            if let record = self.record, let keyID = record.keyID {
-                Logger.log(keyViewOpen: keyID)
-            }
+        if let record = self.record, let keyID = record.keyID {
+            Logger.log(keyViewOpen: keyID)
+        }
 //        }
         copyButton.setTitle(NSLocalizedString("copyKey", comment: ""), for: .normal)
         copyButton.setTitle(NSLocalizedString("copied", comment: "the key has been copied to the clipboard"), for: .disabled)
@@ -48,9 +48,9 @@ class KeyViewController: UIViewController {
 
     override func viewDidDisappear(_ animated: Bool) {
 //        Logger.queue.async(flags: .barrier) {
-            if let record = self.record, let keyID = record.keyID {
-                Logger.log(keyViewClose: keyID, secondsOpened: Int(Date().timeIntervalSince(self.openDate)))
-            }
+        if let record = self.record, let keyID = record.keyID {
+            Logger.log(keyViewClose: keyID, secondsOpened: Int(Date().timeIntervalSince(self.openDate)))
+        }
 //        }
         super.viewDidDisappear(animated)
     }
@@ -89,9 +89,9 @@ extension KeyViewController: UITableViewDataSource {
                 let characters = Array((record?.fingerprint ?? ""))
                 var i = 0
                 stride(from: 0, to: characters.count, by: 4).forEach {
-                    result += String(characters[$0..<min($0+4, characters.count)])
-                    if $0+4 < characters.count {
-                        i = (i+1) % 3
+                    result += String(characters[$0..<min($0 + 4, characters.count)])
+                    if $0 + 4 < characters.count {
+                        i = (i + 1) % 3
                         if i == 0 {
                             result += "\n"
                         }
@@ -118,10 +118,10 @@ extension KeyViewController: UITableViewDataSource {
                 formatter.locale = Locale.current
                 formatter.dateStyle = .medium
                 formatter.timeStyle = .medium
-                if let discoveryDate = record?.key?.discoveryDate{
-                    cell.detailTextLabel?.text = formatter.string(from:  discoveryDate as Date)
+                if let discoveryDate = record?.key?.discoveryDate {
+                    cell.detailTextLabel?.text = formatter.string(from: discoveryDate as Date)
                 }
-                
+
                 return cell
             }
             else if toRowType(indexPath) == .discoveryMail {
@@ -159,7 +159,7 @@ extension KeyViewController: UITableViewDataSource {
         cell.textLabel?.text = NSLocalizedString("KeyNotFound", comment: "there was no key found. Contact developers")
         return cell
     }
-    
+
     func tableView(_ tableView: UITableView, titleForFooterInSection section: Int) -> String? {
         if section == 1 {
             return NSLocalizedString("Checkmarks", comment: "Checkmarks")
@@ -170,7 +170,7 @@ extension KeyViewController: UITableViewDataSource {
     func numberOfSections(in tableView: UITableView) -> Int {
         if let key = record?.key {
             var sections = 1
-            if key.mailaddress != nil{
+            if key.mailaddress != nil {
                 sections += 1
             }
             return sections
@@ -187,7 +187,7 @@ extension KeyViewController: UITableViewDataSource {
         }
         return nil
     }
-    
+
     func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
         if toSectionType(indexPath.section) == .keyDetails {
             if toRowType(indexPath) == .fingerprint {
@@ -196,7 +196,7 @@ extension KeyViewController: UITableViewDataSource {
         }
         return UITableViewAutomaticDimension
     }
-    
+
     func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
         return 150
     }
diff --git a/enzevalos_iphone/LabelStyleKit.swift b/enzevalos_iphone/LabelStyleKit.swift
index 77620595cc49cacae35263c8434a45da22694d03..f1757a4485a3af9ac52147ba9d69d411813aaca9 100644
--- a/enzevalos_iphone/LabelStyleKit.swift
+++ b/enzevalos_iphone/LabelStyleKit.swift
@@ -15,7 +15,7 @@
 
 import UIKit
 
-open class LabelStyleKit : NSObject {
+open class LabelStyleKit: NSObject {
 
     //// Cache
 
@@ -38,7 +38,7 @@ open class LabelStyleKit : NSObject {
     @objc open dynamic class func drawHome(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 28, height: 28), resizing: ResizingBehavior = .aspectFit, color: UIColor = LabelStyleKit.black) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 28, height: 28), target: targetFrame)
@@ -91,7 +91,7 @@ open class LabelStyleKit : NSObject {
         bezier3Path.close()
         color.setFill()
         bezier3Path.fill()
-        
+
         context.restoreGState()
 
     }
@@ -99,7 +99,7 @@ open class LabelStyleKit : NSObject {
     @objc open dynamic class func drawWork(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 148, height: 134), resizing: ResizingBehavior = .aspectFit, color: UIColor = LabelStyleKit.black) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 148, height: 134), target: targetFrame)
@@ -159,7 +159,7 @@ open class LabelStyleKit : NSObject {
         bezier4Path.close()
         color.setFill()
         bezier4Path.fill()
-        
+
         context.restoreGState()
 
     }
@@ -167,7 +167,7 @@ open class LabelStyleKit : NSObject {
     @objc open dynamic class func drawOther(frame targetFrame: CGRect = CGRect(x: 0, y: 0, width: 86, height: 82), resizing: ResizingBehavior = .aspectFit, color: UIColor = LabelStyleKit.black) {
         //// General Declarations
         let context = UIGraphicsGetCurrentContext()!
-        
+
         //// Resize to Target Frame
         context.saveGState()
         let resizedFrame: CGRect = resizing.apply(rect: CGRect(x: 0, y: 0, width: 86, height: 82), target: targetFrame)
@@ -190,7 +190,7 @@ open class LabelStyleKit : NSObject {
         starPath.close()
         color.setFill()
         starPath.fill()
-        
+
         context.restoreGState()
 
     }
@@ -203,7 +203,7 @@ open class LabelStyleKit : NSObject {
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 28, height: 28), false, 0)
-            LabelStyleKit.drawHome()
+        LabelStyleKit.drawHome()
 
         Cache.imageOfHome = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
@@ -217,7 +217,7 @@ open class LabelStyleKit : NSObject {
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 148, height: 134), false, 0)
-            LabelStyleKit.drawWork()
+        LabelStyleKit.drawWork()
 
         Cache.imageOfWork = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
@@ -231,7 +231,7 @@ open class LabelStyleKit : NSObject {
         }
 
         UIGraphicsBeginImageContextWithOptions(CGSize(width: 86, height: 82), false, 0)
-            LabelStyleKit.drawOther()
+        LabelStyleKit.drawOther()
 
         Cache.imageOfOther = UIGraphicsGetImageFromCurrentImageContext()!
         UIGraphicsEndImageContext()
@@ -290,17 +290,17 @@ open class LabelStyleKit : NSObject {
             scales.height = abs(target.height / rect.height)
 
             switch self {
-                case .aspectFit:
-                    scales.width = min(scales.width, scales.height)
-                    scales.height = scales.width
-                case .aspectFill:
-                    scales.width = max(scales.width, scales.height)
-                    scales.height = scales.width
-                case .stretch:
-                    break
-                case .center:
-                    scales.width = 1
-                    scales.height = 1
+            case .aspectFit:
+                scales.width = min(scales.width, scales.height)
+                scales.height = scales.width
+            case .aspectFill:
+                scales.width = max(scales.width, scales.height)
+                scales.height = scales.width
+            case .stretch:
+                break
+            case .center:
+                scales.width = 1
+                scales.height = 1
             }
 
             var result = rect.standardized
diff --git a/enzevalos_iphone/ListViewCell.swift b/enzevalos_iphone/ListViewCell.swift
index c9cb23d2f50f7637a9e0cb3e3245e3989327bc2b..3e53f6d0e6c0447b5e1e7e8d7a70553d6091c13f 100644
--- a/enzevalos_iphone/ListViewCell.swift
+++ b/enzevalos_iphone/ListViewCell.swift
@@ -17,7 +17,7 @@ class ListViewCell: UITableViewCell {
 
 class LoadingCell: UITableViewCell {
     @IBOutlet weak var activityIndicator: UIActivityIndicatorView!
-    
+
     override func layoutSubviews() {
         super.layoutSubviews()
         activityIndicator.startAnimating()
diff --git a/enzevalos_iphone/Logger.swift b/enzevalos_iphone/Logger.swift
index 46607b3f72a9649a4d2ae4f3349dbc5fd6e94554..62c4ab5fdd1fcf988662433e16824cc8e3e536d3 100644
--- a/enzevalos_iphone/Logger.swift
+++ b/enzevalos_iphone/Logger.swift
@@ -16,11 +16,11 @@ class Logger {
 
     static let defaultFileName = "log.json"
     static let loggingInterval = 21600 //60*60*6 seconds
-    static let resendInterval = 5*60
+    static let resendInterval = 5 * 60
     static let logReceiver = LOGGING_MAIL_ADR
 
     static var nextDeadline = (UserManager.loadUserValue(Attribute.nextDeadline) as? Date) ?? Date()
-    
+
     static var studyID = StudySettings.studyID //identifies the participant in the study
 
     static fileprivate func sendCheck() {
@@ -29,7 +29,7 @@ class Logger {
             let tmpNextDeadline = Date(timeIntervalSinceNow: TimeInterval(resendInterval))
             nextDeadline = tmpNextDeadline
             UserManager.storeUserValue(nextDeadline as AnyObject?, attribute: Attribute.nextDeadline)
-            
+
             sendLog()
         }
     }
@@ -53,20 +53,20 @@ class Logger {
         }
     }
 
-    static func log(setupStudy studypara: [StudyParamter:Int], alreadyRegistered: Bool) {
+    static func log(setupStudy studypara: [StudyParamter: Int], alreadyRegistered: Bool) {
         if !logging {
             return
         }
         var event = plainLogDict()
         event["type"] = LoggingEventType.setupStudy.rawValue
-        for (para,value) in studypara{
+        for (para, value) in studypara {
             event[para.name] = value
         }
         event["alreadyRegistered"] = alreadyRegistered
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(startApp onboarding: Bool) {
         if !logging {
             return
@@ -99,24 +99,24 @@ class Logger {
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(onboardingState onboardingSection: String) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.onboardingState.rawValue
         event["onboardingSection"] = onboardingSection
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(onboardingPageTransition from: Int, to: Int, onboardingSection: String) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.onboardingPageTransition.rawValue
         event["from"] = from
@@ -258,38 +258,38 @@ class Logger {
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(exportKeyViewOpen view: Int) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.exportKeyViewOpen.rawValue
         event["view"] = view
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(exportKeyViewClose view: Int) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.exportKeyViewClose.rawValue
         event["view"] = view
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(exportKeyViewButton send: Bool) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.exportKeyViewClose.rawValue
         if send {
@@ -297,98 +297,98 @@ class Logger {
         } else {
             event["case"] = "deletePasscode"
         }
-            
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(importPrivateKeyPopupOpen mail: PersistentMail?) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.importPrivateKeyPopupOpen.rawValue
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(importPrivateKeyPopupClose mail: PersistentMail?, doImport: Bool) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.importPrivateKeyPopupClose.rawValue
         event["doImport"] = doImport
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(importPrivateKey mail: PersistentMail?, success: Bool) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.importPrivateKey.rawValue
         event["success"] = success
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(sendViewOpen mail: EphemeralMail?) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.sendViewOpen.rawValue
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(sendViewClose mail: EphemeralMail?) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.sendViewClose.rawValue
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(createDraft to: [Mail_Address?], cc: [Mail_Address?], bcc: [Mail_Address?], subject: String, bodyLength: Int, isEncrypted: Bool, isSigned: Bool, myKeyID: String) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.createDraft.rawValue
-        
-        
-        
+
+
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
@@ -429,22 +429,22 @@ class Logger {
         else {
             sendCheck()
         }
-            
-        
+
+
     }
-    
+
     static func log(readViewOpen mail: PersistentMail, message: String, draft: Bool = false) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
-        
+
         event["type"] = LoggingEventType.readViewOpen.rawValue
         event = extract(from: mail, event: event)
         event["messagePresented"] = message
         event["draft"] = draft
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
@@ -453,13 +453,13 @@ class Logger {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
-        
+
         event["type"] = LoggingEventType.readViewClose.rawValue
         event["messagePresented"] = message
         event["draft"] = draft
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
@@ -477,20 +477,20 @@ class Logger {
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(bitcoinMail gotIt: Bool) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
-        
+
         event["type"] = LoggingEventType.gotBitcoinMail.rawValue
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
 
     static func log(delete mail: PersistentMail, toTrash: Bool) {
         if !logging {
@@ -503,7 +503,7 @@ class Logger {
         } else {
             event["type"] = LoggingEventType.mailDeletedPersistent.rawValue
         }
-       // event = extract(from: mail, event: event)
+        // event = extract(from: mail, event: event)
         event["operation"] = "DeleteMail"
 
         saveToDisk(json: dictToJSON(fields: event))
@@ -577,18 +577,18 @@ class Logger {
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
-    
+
     static func log(reactTo mail: PersistentMail?) {
         if !logging {
             return
         }
-        
+
         var event = plainLogDict()
         event["type"] = LoggingEventType.reactButtonTapped.rawValue
         if let mail = mail {
             event = extract(from: mail, event: event)
         }
-        
+
         saveToDisk(json: dictToJSON(fields: event))
         sendCheck()
     }
@@ -690,7 +690,7 @@ class Logger {
 
         return event
     }
-    
+
     static fileprivate func extract(from mail: EphemeralMail, event: [String: Any]) -> [String: Any] {
         var event = event
         event["to"] = Logger.resolve(mailAddresses: mail.to)
@@ -702,12 +702,12 @@ class Logger {
         //TODO:
         //event["signingKeyID"] = Logger.resolve(keyID: signingKeyID)
         //event["myKeyID"] = Logger.resolve(keyID: myKeyID)
-        
-        
-        
+
+
+
         //event["secureAddresses"] = secureAddresses //could mean the addresses, in this mail we have a key for
         //event["encryptedForKeyIDs"] = Logger.resolve(keyIDs: encryptedForKeyIDs)
-        
+
         return event
     }
 
@@ -736,7 +736,7 @@ class Logger {
 
         return newSubject
     }
-    
+
     static func specialMail(subject: String) -> String {
         if subject.contains(NSLocalizedString("inviteSubject", comment: "subject of invitation email")) {
             return "invitation"
@@ -883,7 +883,7 @@ class Logger {
             do {
                 let currentContent = try String(contentsOf: fileURL, encoding: .utf8)
                 if !currentContent.isEmpty {
-                    AppDelegate.getAppDelegate().mailHandler.send([logMailAddress], ccEntrys: [], bccEntrys: [], subject: "[Enzevalos] Log", message: "{\"studyID\":\""+studyID+"\",\"data\":" + "[" + currentContent.dropLast() + "\n]" + "}", callback: sendCallback, loggingMail: true)
+                    AppDelegate.getAppDelegate().mailHandler.send([logMailAddress], ccEntrys: [], bccEntrys: [], subject: "[Enzevalos] Log", message: "{\"studyID\":\"" + studyID + "\",\"data\":" + "[" + currentContent.dropLast() + "\n]" + "}", callback: sendCallback, loggingMail: true)
                 }
             }
             catch {
diff --git a/enzevalos_iphone/LoggingEventType.swift b/enzevalos_iphone/LoggingEventType.swift
index 6def1cc05fbdde1ffb10a39f1ab7fbc4a1a035ba..279c284ebe015c439860e0b6469cd012405ba122 100644
--- a/enzevalos_iphone/LoggingEventType.swift
+++ b/enzevalos_iphone/LoggingEventType.swift
@@ -11,43 +11,43 @@ import Foundation
 enum LoggingEventType: String {
     case
     unknown = "unknown",
-    mailSent = "mailSent",
-    mailDeletedPersistent = "mailDeletedPersistent",
-    mailDeletedToTrash = "mailDeletedToTrash",
-    mailArchived = "mailArchived",
-    mailReceived = "mailReceived",
-    setupStudy = "setupStudy",
-    appStart = "appStart",
-    appTerminate = "appTerminate",
-    appBackground = "appBackground",
-    overviewInbox = "overviewInbox",
-    overviewGeneral = "overviewGeneral",
-    readViewOpen = "readViewOpen",
-    readViewClose = "readViewClose",
-    keyViewOpen = "keyViewOpen",
-    keyViewClose = "keyViewClose",
-    sendViewOpen = "sendViewOpen",
-    sendViewClose = "sendViewClose",
-    contactViewOpen = "contactViewOpen",
-    contactViewClose = "contactViewClose",
-    badgeCaseViewOpen = "badgeCaseViewOpen",
-    badgeCaseViewClose = "badgeCaseViewClose",
-    pubKeyDiscoveryNewKey = "pubKeyDiscoveryNewKey",
-    pubKeyDiscoveryKnownKey = "pubKeyDiscoveryKnownKey",
-    pubKeyVerification = "pubKeyVerification",
-    indicatorButtonOpen = "indicatorButtonOpen",
-    indicatorButtonClose = "indicatorButtonClose",
-    showBrokenMail = "showBrokenMail",
-    reactButtonTapped = "reactButtonTapped",
-    createDraft = "createDraft",
-    exportKeyViewOpen = "exportKeyViewOpen",
-    exportKeyViewButtonTap = "exportKeyViewButtonTap",
-    exportKeyViewClose = "exportKeyViewClose",
-    importPrivateKeyPopupOpen = "importPrivateKeyPopupOpen",
-    importPrivateKeyPopupClose = "importPrivateKeyPopupClose",
-    importPrivateKey = "importPrivateKey",
-    search = "search",
-    gotBitcoinMail = "gotBitcoinMail",
-    onboardingPageTransition = "onboardingPageTransition",
-    onboardingState = "onboardingState"
+        mailSent = "mailSent",
+        mailDeletedPersistent = "mailDeletedPersistent",
+        mailDeletedToTrash = "mailDeletedToTrash",
+        mailArchived = "mailArchived",
+        mailReceived = "mailReceived",
+        setupStudy = "setupStudy",
+        appStart = "appStart",
+        appTerminate = "appTerminate",
+        appBackground = "appBackground",
+        overviewInbox = "overviewInbox",
+        overviewGeneral = "overviewGeneral",
+        readViewOpen = "readViewOpen",
+        readViewClose = "readViewClose",
+        keyViewOpen = "keyViewOpen",
+        keyViewClose = "keyViewClose",
+        sendViewOpen = "sendViewOpen",
+        sendViewClose = "sendViewClose",
+        contactViewOpen = "contactViewOpen",
+        contactViewClose = "contactViewClose",
+        badgeCaseViewOpen = "badgeCaseViewOpen",
+        badgeCaseViewClose = "badgeCaseViewClose",
+        pubKeyDiscoveryNewKey = "pubKeyDiscoveryNewKey",
+        pubKeyDiscoveryKnownKey = "pubKeyDiscoveryKnownKey",
+        pubKeyVerification = "pubKeyVerification",
+        indicatorButtonOpen = "indicatorButtonOpen",
+        indicatorButtonClose = "indicatorButtonClose",
+        showBrokenMail = "showBrokenMail",
+        reactButtonTapped = "reactButtonTapped",
+        createDraft = "createDraft",
+        exportKeyViewOpen = "exportKeyViewOpen",
+        exportKeyViewButtonTap = "exportKeyViewButtonTap",
+        exportKeyViewClose = "exportKeyViewClose",
+        importPrivateKeyPopupOpen = "importPrivateKeyPopupOpen",
+        importPrivateKeyPopupClose = "importPrivateKeyPopupClose",
+        importPrivateKey = "importPrivateKey",
+        search = "search",
+        gotBitcoinMail = "gotBitcoinMail",
+        onboardingPageTransition = "onboardingPageTransition",
+        onboardingState = "onboardingState"
 }
diff --git a/enzevalos_iphone/Mail.swift b/enzevalos_iphone/Mail.swift
index 6a8b57ccd0a91b9afaab5f0ec8be4035c87636af..b119001a2880a021e1febba68c72cd62774e7d75 100644
--- a/enzevalos_iphone/Mail.swift
+++ b/enzevalos_iphone/Mail.swift
@@ -18,7 +18,7 @@ public protocol Mail: Comparable {
     var subject: String? { get }
     var body: String? { get }
     var uid: UInt64 { get }
-    var predecessor: PersistentMail?{get}
+    var predecessor: PersistentMail? { get }
 }
 
 public func == <T: Mail> (lhs: T, rhs: T) -> Bool {
diff --git a/enzevalos_iphone/MailAddress.swift b/enzevalos_iphone/MailAddress.swift
index 7e82185023d3d544eab43bd27d151726ec14918c..b389dfdc7d6ed6cec4df973b0ff828e6bc81c1a5 100644
--- a/enzevalos_iphone/MailAddress.swift
+++ b/enzevalos_iphone/MailAddress.swift
@@ -15,9 +15,9 @@ public enum EncState {
     case NOPREFERENCE
     case RESET
     case NOAUTOCRYPT
-    
-    
-    static func find(i: Int) -> EncState{
+
+
+    static func find(i: Int) -> EncState {
         switch i {
         case 0:
             return EncState.MUTAL
@@ -33,9 +33,9 @@ public enum EncState {
             return EncState.NOAUTOCRYPT
         }
     }
-    
-    func canEnc() -> Bool{
-        
+
+    func canEnc() -> Bool {
+
         switch self {
         case EncState.MUTAL:
             return true
@@ -47,7 +47,7 @@ public enum EncState {
             return false
         }
     }
-    func asInt()-> Int16{
+    func asInt() -> Int16 {
         switch self {
         case EncState.MUTAL:
             return 0
@@ -65,13 +65,13 @@ public enum EncState {
 }
 
 public protocol MailAddress {
-    var mailAddress:String{get}
-    var label: CNLabeledValue<NSString>{get} //FIXME: ist der NSString hier wirklich richtig? (http://stackoverflow.com/questions/39648830/how-to-add-new-email-to-cnmutablecontact-in-swift-3)
-   // var prefEnc: EncState{get set}
-    var hasKey: Bool{get}
-    
-    var primaryKey: PersistentKey?{get}
-    var publicKeys: Set<PersistentKey>{get}
-    var contact: EnzevalosContact?{get}
+    var mailAddress: String { get }
+    var label: CNLabeledValue<NSString> { get } //FIXME: ist der NSString hier wirklich richtig? (http://stackoverflow.com/questions/39648830/how-to-add-new-email-to-cnmutablecontact-in-swift-3)
+    // var prefEnc: EncState{get set}
+    var hasKey: Bool { get }
+
+    var primaryKey: PersistentKey? { get }
+    var publicKeys: Set<PersistentKey> { get }
+    var contact: EnzevalosContact? { get }
 }
 
diff --git a/enzevalos_iphone/MailHandlerDelegator.swift b/enzevalos_iphone/MailHandlerDelegator.swift
index 2d920f9dcb7ed886803c7503e19fac92ed642054..6be14b3baf54a8e2354fcd1a39cf1e071b3c38bd 100644
--- a/enzevalos_iphone/MailHandlerDelegator.swift
+++ b/enzevalos_iphone/MailHandlerDelegator.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 protocol MailHandlerDelegator {
-    
+
     func addNewMail(_ mail: PersistentMail)
     func getMailCompleted()
 }
diff --git a/enzevalos_iphone/Mail_Address+CoreDataClass.swift b/enzevalos_iphone/Mail_Address+CoreDataClass.swift
index 841e70691bd18b24ec2c07484d0e0444d9e7915d..49df958e639d9b12687744b7ac32c3399ca54b5e 100644
--- a/enzevalos_iphone/Mail_Address+CoreDataClass.swift
+++ b/enzevalos_iphone/Mail_Address+CoreDataClass.swift
@@ -13,11 +13,11 @@ import Contacts
 
 @objc(Mail_Address)
 open class Mail_Address: NSManagedObject, MailAddress {
-    
-    public var primaryKey: PersistentKey?{
-        get{
-            if hasKey{
-                for key in publicKeys{
+
+    public var primaryKey: PersistentKey? {
+        get {
+            if hasKey {
+                for key in publicKeys {
                     if key.keyID == primaryKeyID {
                         return key
                     }
@@ -26,25 +26,25 @@ open class Mail_Address: NSManagedObject, MailAddress {
             return nil
         }
     }
-    
-    open var publicKeys: Set<PersistentKey>{
-        get{
-            if let pks = keys{
-                if let publicKeys = pks as? Set<PersistentKey>{
+
+    open var publicKeys: Set<PersistentKey> {
+        get {
+            if let pks = keys {
+                if let publicKeys = pks as? Set<PersistentKey> {
                     return publicKeys
                 }
             }
             return Set<PersistentKey>()
         }
     }
-       
-    
+
+
 
     open var mailAddress: String {
         return address.lowercased()
     }
 
-    open var label: CNLabeledValue<NSString> { 
+    open var label: CNLabeledValue<NSString> {
         if let cnc = self.contact?.cnContact {
             for adr in cnc.emailAddresses {
                 if adr.value as String == address {
@@ -56,9 +56,9 @@ open class Mail_Address: NSManagedObject, MailAddress {
     }
 
 
-    
+
     open var hasKey: Bool {
-        if publicKeys.count > 0{
+        if publicKeys.count > 0 {
             return true
         }
         return false
diff --git a/enzevalos_iphone/Mail_Address+CoreDataProperties.swift b/enzevalos_iphone/Mail_Address+CoreDataProperties.swift
index 19fe2dcb991e8bcd1d82c20003483fb412e75a52..8d74a89a15896d67c9151554ffed0243cd18e09c 100644
--- a/enzevalos_iphone/Mail_Address+CoreDataProperties.swift
+++ b/enzevalos_iphone/Mail_Address+CoreDataProperties.swift
@@ -17,7 +17,7 @@ extension Mail_Address {
     }
 
     @NSManaged public var address: String
-    @NSManaged public var contact: EnzevalosContact?    
+    @NSManaged public var contact: EnzevalosContact?
     @NSManaged public var bcc: NSSet?
     @NSManaged public var cc: NSSet?
     @NSManaged public var from: NSSet?
@@ -34,68 +34,68 @@ extension Mail_Address {
 
 // MARK: Generated accessors for bcc
 extension Mail_Address {
-    
+
     @objc(addBccObject:)
     @NSManaged public func addToBcc(_ value: PersistentMail)
-    
+
     @objc(removeBccObject:)
     @NSManaged public func removeFromBcc(_ value: PersistentMail)
-    
+
     @objc(addBcc:)
     @NSManaged public func addToBcc(_ values: NSSet)
-    
+
     @objc(removeBcc:)
     @NSManaged public func removeFromBcc(_ values: NSSet)
-    
+
 }
 
 // MARK: Generated accessors for cc
 extension Mail_Address {
-    
+
     @objc(addCcObject:)
     @NSManaged public func addToCc(_ value: PersistentMail)
-    
+
     @objc(removeCcObject:)
     @NSManaged public func removeFromCc(_ value: PersistentMail)
-    
+
     @objc(addCc:)
     @NSManaged public func addToCc(_ values: NSSet)
-    
+
     @objc(removeCc:)
     @NSManaged public func removeFromCc(_ values: NSSet)
-    
+
 }
 
 // MARK: Generated accessors for to
 extension Mail_Address {
-    
+
     @objc(addToObject:)
     @NSManaged public func addToTo(_ value: PersistentMail)
-    
+
     @objc(removeToObject:)
     @NSManaged public func removeFromTo(_ value: PersistentMail)
-    
+
     @objc(addTo:)
     @NSManaged public func addToTo(_ values: NSSet)
-    
+
     @objc(removeTo:)
     @NSManaged public func removeFromTo(_ values: NSSet)
-    
+
 }
 
 // MARK: Generated accessors for key
 extension Mail_Address {
-    
+
     @objc(addKeysObject:)
     @NSManaged public func addToKeys(_ value: PersistentKey)
-    
+
     @objc(removeKeysObject:)
     @NSManaged public func removeFromKeys(_ value: PersistentKey)
-    
+
     @objc(addKeys:)
     @NSManaged public func addToKeys(_ values: NSSet)
-    
+
     @objc(removeKeys:)
     @NSManaged public func removeFromKeys(_ values: NSSet)
-    
+
 }
diff --git a/enzevalos_iphone/PersistentKey+CoreDataClass.swift b/enzevalos_iphone/PersistentKey+CoreDataClass.swift
index 0bc7eadb61fab350d46ac5a34e66ce5acff9acf0..fe2293514c39403aa22632561ed1b1f284cda493 100644
--- a/enzevalos_iphone/PersistentKey+CoreDataClass.swift
+++ b/enzevalos_iphone/PersistentKey+CoreDataClass.swift
@@ -1,6 +1,6 @@
 //
 //  PersistentKey+CoreDataClass.swift
-//  
+//
 //
 //  Created by Oliver Wiese on 27.09.17.
 //
@@ -11,41 +11,41 @@ import CoreData
 
 @objc(PersistentKey)
 public class PersistentKey: NSManagedObject {
- 
+
     open var prefEnc: EncState {
-        get{
+        get {
             return prefer_encryption
         }
-        set{
+        set {
             prefer_encryption = newValue
         }
     }
-    
-    var counterSignedMails: Int{
-        if let signedMails = self.signedMails{
+
+    var counterSignedMails: Int {
+        if let signedMails = self.signedMails {
             return signedMails.count
         }
         return 0
     }
-    
-    func verify(){
+
+    func verify() {
         self.verifiedDate = Date.init()
     }
-    
-    func isVerified() -> Bool{
+
+    func isVerified() -> Bool {
         return self.verifiedDate != nil
     }
-    
-    func isExpired()-> Bool{
+
+    func isExpired() -> Bool {
         let pgp = SwiftPGP()
-        if let key = pgp.loadKey(id: self.keyID){
-            if let expire = key.expirationDate{
+        if let key = pgp.loadKey(id: self.keyID) {
+            if let expire = key.expirationDate {
                 return expire < Date.init()
             }
-           return false
+            return false
         }
         return true
     }
-    
-    
+
+
 }
diff --git a/enzevalos_iphone/PersistentMail +CoreDataProperties.swift b/enzevalos_iphone/PersistentMail +CoreDataProperties.swift
index 4636ab69d4e577c95223f408025e0cb6dcfcbc1e..2c16b0debdde4b9901a9a3ff3618d5144a8a2669 100644
--- a/enzevalos_iphone/PersistentMail +CoreDataProperties.swift	
+++ b/enzevalos_iphone/PersistentMail +CoreDataProperties.swift	
@@ -23,21 +23,21 @@ extension PersistentMail {
     @NSManaged public var secretKey: String?
     @NSManaged public var record: KeyRecord?
 
-    public var flag: MCOMessageFlag{
+    public var flag: MCOMessageFlag {
         set {
-            if newValue != flag{
+            if newValue != flag {
                 AppDelegate.getAppDelegate().mailHandler.addFlag(self.uid, flags: newValue, folder: folder.name)
                 self.willChangeValue(forKey: "flag")
                 self.setPrimitiveValue(newValue.rawValue, forKey: "flag")
                 self.didChangeValue(forKey: "flag")
-                
+
             }
-            
+
         }
         get {
             self.willAccessValue(forKey: "flag")
             var value = MCOMessageFlag().rawValue
-            if let flagInt = self.primitiveValue(forKey: "flag"){
+            if let flagInt = self.primitiveValue(forKey: "flag") {
                 value = flagInt as! Int
             }
             let text = MCOMessageFlag(rawValue: value)
@@ -55,32 +55,32 @@ extension PersistentMail {
     @NSManaged public var firstKey: PersistentKey?
     @NSManaged public var signedKey: PersistentKey?
     @NSManaged public var received: Bool
-    
+
     @NSManaged public var gmailMessageID: NSNumber?
     @NSManaged public var gmailThreadID: NSNumber?
     @NSManaged public var messageID: String?
     @NSManaged public var notLoadedMessages: String?
-    
+
     @NSManaged public var xMailer: String?
 
- 
-    public var keyID: String?{
+
+    public var keyID: String? {
         set {
             self.willChangeValue(forKey: "keyID")
             self.setPrimitiveValue(newValue, forKey: "keyID")
             self.didChangeValue(forKey: "keyID")
         }
         get {
-            var  signKeyID: String?
-            if let k = self.signedKey{
+            var signKeyID: String?
+            if let k = self.signedKey {
                 signKeyID = k.keyID
             }
             self.willAccessValue(forKey: "keyID")
-            if let text = self.primitiveValue(forKey: "keyID"){
+            if let text = self.primitiveValue(forKey: "keyID") {
                 signKeyID = text as? String
             }
-            else{
-                if let id = signKeyID{
+            else {
+                if let id = signKeyID {
                     self.setPrimitiveValue(id, forKey: "keyID")
                 }
             }
@@ -88,9 +88,9 @@ extension PersistentMail {
             return signKeyID
         }
     }
-    
-    
-    public var trouble: Bool{
+
+
+    public var trouble: Bool {
         set {
             self.willChangeValue(forKey: "trouble")
             self.setPrimitiveValue(newValue, forKey: "trouble")
@@ -102,9 +102,9 @@ extension PersistentMail {
             self.didAccessValue(forKey: "trouble")
             return text
         }
-    
+
     }
-    public var uid: UInt64{
+    public var uid: UInt64 {
         set {
             self.willChangeValue(forKey: "uid")
             self.setPrimitiveValue(NSDecimalNumber.init(value: newValue as UInt64), forKey: "uid")
@@ -117,9 +117,9 @@ extension PersistentMail {
             return text!
         }
     }
-    public var uidvalidity: UInt32?{
+    public var uidvalidity: UInt32? {
         set {
-            if let num = newValue{
+            if let num = newValue {
                 self.willChangeValue(forKey: "uidvalidity")
                 self.setPrimitiveValue(NSDecimalNumber.init(value: num as UInt32), forKey: "uidvalidity")
                 self.didChangeValue(forKey: "uidvalidity")
@@ -132,12 +132,12 @@ extension PersistentMail {
             return text
         }
     }
-    public var from: MailAddress{
+    public var from: MailAddress {
         set {
-            if newValue is Mail_Address{
+            if newValue is Mail_Address {
                 let adr = newValue as! Mail_Address
                 self.willChangeValue(forKey: "from")
-                self.setValue(adr, forKey: "from" )
+                self.setValue(adr, forKey: "from")
                 self.didChangeValue(forKey: "from")
             }
         }
@@ -151,43 +151,43 @@ extension PersistentMail {
             return Mail_Address()
         }
     }
-    public var containsSecretKey: Bool{
-        get{
+    public var containsSecretKey: Bool {
+        get {
             return secretKey != nil
         }
     }
-    
-    private func extractPassword(body: String)-> String?{
+
+    private func extractPassword(body: String) -> String? {
         var pw: String? = nil
         var keyword: String? = nil
-        if body.contains("PW:"){
+        if body.contains("PW:") {
             keyword = "PW:"
         }
-        else if body.contains("pw:"){
+        else if body.contains("pw:") {
             keyword = "pw:"
         }
-        else if body.contains("password:"){
+        else if body.contains("password:") {
             keyword = "password:"
         }
-        if let key = keyword{
-            if let range = (body.range(of: key)?.upperBound){
+        if let key = keyword {
+            if let range = (body.range(of: key)?.upperBound) {
                 pw = String(body[range...])
-                if let split = pw?.components(separatedBy: CharacterSet.whitespacesAndNewlines){
-                    if split.count > 0 && split[0].count > 0{
+                if let split = pw?.components(separatedBy: CharacterSet.whitespacesAndNewlines) {
+                    if split.count > 0 && split[0].count > 0 {
                         pw = split[0]
                     }
-                    else if split.count > 1{
+                    else if split.count > 1 {
                         pw = split[1]
                     }
                 }
             }
         }
         return pw
-        
+
     }
-    
-    public func processSecretKey(pw: String?) throws -> Bool{
-        if let sk = secretKey{
+
+    public func processSecretKey(pw: String?) throws -> Bool {
+        if let sk = secretKey {
             let pgp = SwiftPGP()
             let keyIDs = try pgp.importKeys(key: sk, pw: pw, isSecretKey: true, autocrypt: false)
             let sks = DataHandler.handler.newSecretKeys(keyIds: keyIDs, addPKs: true)
@@ -195,7 +195,7 @@ extension PersistentMail {
         }
         return false
     }
-    
+
     @NSManaged public var bcc: NSSet?
     @NSManaged public var cc: NSSet?
     @NSManaged public var to: NSSet
@@ -257,34 +257,34 @@ extension PersistentMail {
 
 // MARK: Generated accessors for attachments
 extension PersistentMail {
-    
+
     @objc(addAttachmentsObject:)
     @NSManaged public func addToAttachments(_ value: Attachment)
-    
+
     @objc(removeAttachmentsObject:)
     @NSManaged public func removeFromAttachments(_ value: Attachment)
-    
+
     @objc(addAttachments:)
     @NSManaged public func addToAttachments(_ values: NSSet)
-    
+
     @objc(removeAttachments:)
     @NSManaged public func removeFromAttachments(_ values: NSSet)
-    
+
 }
 
 // MARK: Generated accessors for attachments
 extension PersistentMail {
-    
+
     @objc(addReferenceMailsObject:)
     @NSManaged public func addToReferenceMails(_ value: PersistentMail)
-    
+
     @objc(removeReferenceMailsObject:)
     @NSManaged public func removeFromReferenceMails(_ value: PersistentMail)
-    
+
     @objc(addReferenceMails:)
     @NSManaged public func addToReferenceMails(_ values: NSSet)
-    
+
     @objc(removeReferenceMails:)
     @NSManaged public func removeFromReferenceMails(_ values: NSSet)
-    
+
 }
diff --git a/enzevalos_iphone/QRCodeGenerator.swift b/enzevalos_iphone/QRCodeGenerator.swift
index 385d667746cb550b4e7789516d8e29645022c9b3..aa5a2291a506a261efefded6c19a31aef3dc86fd 100644
--- a/enzevalos_iphone/QRCodeGenerator.swift
+++ b/enzevalos_iphone/QRCodeGenerator.swift
@@ -10,18 +10,18 @@
 import Foundation
 
 class QRCode {
-    
+
     static func generate(input: String) -> CIImage {
         var qrCode: CIImage
-        
+
         let data = input.data(using: String.Encoding.isoLatin1)
         let filter = CIFilter(name: "CIQRCodeGenerator")!
-        
+
         filter.setValue(data, forKey: "inputMessage")
         filter.setValue("M", forKey: "inputCorrectionLevel")
-        
+
         qrCode = filter.outputImage!
-        
+
         return qrCode
     }
 }
diff --git a/enzevalos_iphone/QRScannerView.swift b/enzevalos_iphone/QRScannerView.swift
index 3970df3704a4d06963638c33957ba5c41c768101..8bc7e05dc0da063c357646020aa84b8b10e0806b 100644
--- a/enzevalos_iphone/QRScannerView.swift
+++ b/enzevalos_iphone/QRScannerView.swift
@@ -114,7 +114,7 @@ class QRScannerView: ViewControllerPannable, AVCaptureMetadataOutputObjectsDeleg
 
     @IBAction func close(_ sender: Any) {
 //        Logger.queue.async(flags: .barrier) {
-            Logger.log(verify: self.keyId ?? "noKeyID", open: false, success: false)
+        Logger.log(verify: self.keyId ?? "noKeyID", open: false, success: false)
 //        }
         dismiss(animated: true, completion: nil)
     }
@@ -165,15 +165,15 @@ class QRScannerView: ViewControllerPannable, AVCaptureMetadataOutputObjectsDeleg
                         DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.5) {
                             let alert = UIAlertController(title: NSLocalizedString("fingerprintMissmatchShort", comment: "Found fingerprint does not match"), message: NSLocalizedString("fingerprintMissmatchText", comment: "Found fingerprint does not match"), preferredStyle: .alert)
                             alert.addAction(UIAlertAction(title: NSLocalizedString("MoreInformation", comment: "More Information"), style: .default, handler: {
-                                (action: UIAlertAction!) -> Void in
-                                UIApplication.shared.openURL(URL(string: "https://userpage.fu-berlin.de/letterbox/faq.html#headingWrongFingerprint")!)
-                                self.dismiss(animated: false, completion: nil)
-                            }))
+                                    (action: UIAlertAction!) -> Void in
+                                    UIApplication.shared.openURL(URL(string: "https://userpage.fu-berlin.de/letterbox/faq.html#headingWrongFingerprint")!)
+                                    self.dismiss(animated: false, completion: nil)
+                                }))
                             alert.addAction(UIAlertAction(title: NSLocalizedString("scanDifferentCode", comment: ""), style: .default, handler: {
-                                (action: UIAlertAction!) -> Void in
-                                self.qrCodeFrameView?.path = nil
-                                self.captureSession?.startRunning()
-                            }))
+                                    (action: UIAlertAction!) -> Void in
+                                    self.qrCodeFrameView?.path = nil
+                                    self.captureSession?.startRunning()
+                                }))
                             alert.addAction(UIAlertAction(title: NSLocalizedString("Cancel", comment: "Cancel"), style: .cancel, handler: { (action: UIAlertAction!) -> Void in self.dismiss(animated: true, completion: nil) }))
                             self.present(alert, animated: true, completion: nil)
                         }
diff --git a/enzevalos_iphone/ReadViewController.swift b/enzevalos_iphone/ReadViewController.swift
index 3b49cd96035db8a46b87413bef4ef5f26e3d6c77..51f1c63ffb1c04b0b913ba75ceb26c0239094187 100644
--- a/enzevalos_iphone/ReadViewController.swift
+++ b/enzevalos_iphone/ReadViewController.swift
@@ -131,7 +131,7 @@ class ReadViewController: UITableViewController {
         }
 
         textDelegate = ReadTextDelegate()
-        textDelegate?.callback = {[weak self] (address: String) in self?.newMailCallback(Address: address)}
+        textDelegate?.callback = { [weak self] (address: String) in self?.newMailCallback(Address: address) }
 
         messageBody.delegate = textDelegate
 
diff --git a/enzevalos_iphone/Record.swift b/enzevalos_iphone/Record.swift
index 8484dfbf50290c9b5d26e202b3278f6a478a0a98..77a4305498fd7d64fd0ccb4ed522cf625cf554b4 100644
--- a/enzevalos_iphone/Record.swift
+++ b/enzevalos_iphone/Record.swift
@@ -12,7 +12,7 @@ import UIKit
 
 
 public protocol Record: Comparable {
-    
+
     var name: String { get }
     var hasKey: Bool { get }
     var isVerified: Bool { get }
diff --git a/enzevalos_iphone/SendViewController+Invitation.swift b/enzevalos_iphone/SendViewController+Invitation.swift
index 02031a883ff0f88c5dfdbec69630f8fed8c37a29..8bc8d22915f8459593154f5d580bf787fd4d63fc 100644
--- a/enzevalos_iphone/SendViewController+Invitation.swift
+++ b/enzevalos_iphone/SendViewController+Invitation.swift
@@ -20,12 +20,12 @@ struct InvitationSelection {
 
 extension SendViewController {
 
-    var isCensored: Bool{
-        get{
+    var isCensored: Bool {
+        get {
             return StudySettings.invitationsmode == InvitationMode.Censorship
         }
     }
-    
+
     func htmlMessage() -> (html: String?, textparts: Int, plaintext: String?) {
         var htmlName = "invitationText"
         if isCensored {
@@ -49,8 +49,8 @@ extension SendViewController {
         let cipherText = SwiftPGP().symmetricEncrypt(textToEncrypt: [textsToEncrypt.joined(separator: "\n")], armored: true, password: nil)
         let texts = textsToEncrypt.map { _ -> String in
             // Change text in mail body
-            if isCensored{
-                return String(repeating: "█" as String as String, count: (Int(arc4random_uniform(7)+3)))
+            if isCensored {
+                return String(repeating: "█" as String as String, count: (Int(arc4random_uniform(7) + 3)))
             }
             return String.random(length: 10)
         }
@@ -62,7 +62,7 @@ extension SendViewController {
         }
 
         var link = "http://letterbox.imp.fu-berlin.de?text=\(urlTexts)&cipher=\(cipher)&id=\(StudySettings.studyID)&invitation=Enc"
-        if isCensored{
+        if isCensored {
             link = "http://letterbox.imp.fu-berlin.de?id=\(StudySettings.studyID)&invitation=Censor"
         }
 
@@ -71,41 +71,41 @@ extension SendViewController {
         }
 
         for (index, range) in locations.enumerated() {
-            if isCensored{
+            if isCensored {
                 let t = text as NSString
                 text = t.replacingCharacters(in: range, with: texts[index])
                 plainText = (plainText as NSString).replacingCharacters(in: range, with: texts[index])
             }
-            else{
+            else {
                 text = (text as NSString).replacingCharacters(in: range, with: "<a class=\"encrypted-text\">\(texts[index])</a>")
                 plainText = (plainText as NSString).replacingCharacters(in: range, with: texts[index])
 
-                
+
             }
         }
         if (self.invitationSelection.code == nil && StudySettings.invitationsmode == InvitationMode.PasswordEnc) {
             self.invitationSelection.code = cipherText.password
         }
         var previousText = ""
-        
-        if let range = text.range(of: NSLocalizedString("Mail.Signature", comment: "")){
+
+        if let range = text.range(of: NSLocalizedString("Mail.Signature", comment: "")) {
             text.removeSubrange(range)
         }
-        
-        if let preMail = prefilledMail, let previousBody = preMail.body{
-            if let range = text.range(of: previousBody){
+
+        if let preMail = prefilledMail, let previousBody = preMail.body {
+            if let range = text.range(of: previousBody) {
                 previousText = previousBody
                 text.removeSubrange(range)
             }
         }
-        
+
         var plainFooter = String(format: NSLocalizedString("Invitation.EncryptionFooter", comment: ""), link, link)
         if isCensored {
             plainFooter = String(format: NSLocalizedString("Invitation.CensorFooter", comment: ""), link, link)
         }
-        
+
         plainText = plainText + plainFooter + "\n\n" + previousText
-        
+
         return (String(format: htmlString, text, link, link, previousText), texts.count, nil)
     }
 
@@ -129,19 +129,19 @@ extension SendViewController {
         guard selectedRange != nil else {
             let labelTitel: String
             switch StudySettings.invitationsmode {
-                case .Censorship    : labelTitel = NSLocalizedString("Invitation.Encrypt.Censor", comment: "")
-                case .PasswordEnc   : labelTitel = NSLocalizedString("Invitation.Encrypt", comment: "")
-                case .FreeText,
-                     .InviteMail    : return nil
+            case .Censorship: labelTitel = NSLocalizedString("Invitation.Encrypt.Censor", comment: "")
+            case .PasswordEnc: labelTitel = NSLocalizedString("Invitation.Encrypt", comment: "")
+            case .FreeText,
+                 .InviteMail: return nil
             }
             return [UIMenuItem(title: labelTitel, action: #selector(self.markSelectedText))]
         }
         let labelTitel: String
         switch StudySettings.invitationsmode {
-        case .Censorship    : labelTitel = NSLocalizedString("Invitation.Decrypt.Censor", comment: "")
-        case .PasswordEnc   : labelTitel = NSLocalizedString("Invitation.Decrypt", comment: "")
+        case .Censorship: labelTitel = NSLocalizedString("Invitation.Decrypt.Censor", comment: "")
+        case .PasswordEnc: labelTitel = NSLocalizedString("Invitation.Decrypt", comment: "")
         case .FreeText,
-             .InviteMail    : return nil
+             .InviteMail: return nil
         }
         return [UIMenuItem(title: labelTitel, action: #selector(self.unmarkSelectedText))]
     }
@@ -216,12 +216,12 @@ extension SendViewController {
         controller?.ctaAction = {
             controller?.hideDialog(completion: nil)
             switch StudySettings.invitationsmode {
-                case .FreeText:
-                    self.performSegue(withIdentifier: "inviteSegueStudy", sender: nil)
-                    return
-                case .InviteMail:
-                    self.performSegue(withIdentifier: "inviteSegue", sender: nil)
-                    return
+            case .FreeText:
+                self.performSegue(withIdentifier: "inviteSegueStudy", sender: nil)
+                return
+            case .InviteMail:
+                self.performSegue(withIdentifier: "inviteSegue", sender: nil)
+                return
             case .Censorship, .PasswordEnc:
                 return
             }
@@ -367,7 +367,7 @@ extension SendViewController: UITextViewDelegate {
     func textViewDidBeginEditing(_ textView: UITextView) {
         self.updateMarkedText(for: textView)
     }
-    
+
     func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool {
 
         self.textChanged(inRange: range, with: text)
diff --git a/enzevalos_iphone/SendViewState.swift b/enzevalos_iphone/SendViewState.swift
index 324412be06cd6999f6dca7af00dcba6cc15f53c4..945a103325e87d3bb6b758a431ed0b25197ae09c 100644
--- a/enzevalos_iphone/SendViewState.swift
+++ b/enzevalos_iphone/SendViewState.swift
@@ -14,18 +14,18 @@ enum SendViewContactSecurityState {
 
 enum SendViewMailSecurityState: Equatable {
     case letter, postcard, extendedPostcard(SendViewSpecialMailState)
-    
+
     var rawValue: Int {
         get {
             switch self {
-                case .letter: return 0
-                case .postcard: return 1
-                case .extendedPostcard(_): return 2
+            case .letter: return 0
+            case .postcard: return 1
+            case .extendedPostcard(_): return 2
             }
         }
     }
-    
-    static func ==(lhs:SendViewMailSecurityState, rhs:SendViewMailSecurityState) -> Bool {
+
+    static func == (lhs: SendViewMailSecurityState, rhs: SendViewMailSecurityState) -> Bool {
         return lhs.rawValue == rhs.rawValue
     }
 }
diff --git a/enzevalos_iphone/StringExtension.swift b/enzevalos_iphone/StringExtension.swift
index 8786773bdd1bb3f1bb80620292beee60fbba6961..079eff15d84f58d989b466ebd41e1979527d2c3b 100644
--- a/enzevalos_iphone/StringExtension.swift
+++ b/enzevalos_iphone/StringExtension.swift
@@ -8,10 +8,10 @@
 
 import Foundation
 extension String {
-    
+
     static func random(length: Int = 20) -> String {
         var randomBytes = Data(count: length)
-        
+
         let result = randomBytes.withUnsafeMutableBytes {
             SecRandomCopyBytes(kSecRandomDefault, length, $0)
         }
diff --git a/enzevalos_iphone/StudySettings.swift b/enzevalos_iphone/StudySettings.swift
index 5cda1753bc6df3d9117c92968577779adfe2f7a9..5f7f06edfa637d7791fc4de7f634f43791dd97b9 100644
--- a/enzevalos_iphone/StudySettings.swift
+++ b/enzevalos_iphone/StudySettings.swift
@@ -12,9 +12,9 @@ import KeychainAccess
 enum StudyParamter: Int {
     case Warning = 0
     case Invitation = 1
-    
-    var name: String{
-        get{
+
+    var name: String {
+        get {
             switch self {
             case .Warning:
                 return "warning"
@@ -23,10 +23,10 @@ enum StudyParamter: Int {
             }
         }
     }
-    
+
     var keyName: String {
-        get{
-            switch  self {
+        get {
+            switch self {
             case .Warning:
                 return "hideWarnings"
             case .Invitation:
@@ -35,7 +35,7 @@ enum StudyParamter: Int {
         }
     }
     var numberOfTreatments: UInt32 {
-        get{
+        get {
             switch self {
             case .Warning:
                 return 2
@@ -57,8 +57,8 @@ class StudySettings {
     static var studyMode = true
     static var presentFirstQuestionaireMail = false
     static let parameters = [StudyParamter.Invitation]
-    
-    public static var invitationEnabled: Bool{
+
+    public static var invitationEnabled: Bool {
         get {
             return true
         }
@@ -93,39 +93,39 @@ class StudySettings {
                 keychain["bitcoin"] = "true"
                 UserDefaults.standard.set(true, forKey: "bitcoin")
 //                Logger.queue.async(flags: .barrier) {
-                    Logger.log(bitcoinMail: true)
+                Logger.log(bitcoinMail: true)
 //                }
             }
         }
     }
-    
-    static var invitationsmode: InvitationMode{
-        get{
+
+    static var invitationsmode: InvitationMode {
+        get {
             return UserManager.loadInvitationMode()
             let value = UserDefaults.standard.integer(forKey: StudyParamter.Invitation.keyName)
-            if let mode = InvitationMode.init(rawValue: value){
+            if let mode = InvitationMode.init(rawValue: value) {
                 return mode
             }
             return InvitationMode.InviteMail
         }
     }
-    
-    
-    private static var studyParameters: [StudyParamter:Int]{
-        get{
+
+
+    private static var studyParameters: [StudyParamter: Int] {
+        get {
             let keychain = Keychain(service: "Enzevalos/Study")
             var studyParamters = [StudyParamter: Int]()
-            for parameter in parameters{
+            for parameter in parameters {
                 var value: Int?
                 if let state = keychain[parameter.keyName], let num = Int(state) {
                     value = num
                 } else {
                     value = Int(arc4random_uniform(parameter.numberOfTreatments))
-                    if let value = value{
+                    if let value = value {
                         keychain[parameter.keyName] = String(value)
                     }
                 }
-                if let v = value{
+                if let v = value {
                     UserDefaults.standard.set(v, forKey: parameter.keyName)
                     studyParamters[parameter] = v
                 }
@@ -133,8 +133,8 @@ class StudySettings {
             return studyParamters
         }
     }
-    
-    
+
+
     static func setupStudy() {
         if !studyMode {
             //Logger.logging = false
@@ -154,7 +154,7 @@ class StudySettings {
             keychain["studyID"] = studyID
             UserDefaults.standard.set(studyID, forKey: "studyID")
         }
-        
+
         if let bitcoin = keychain["bitcoin"] { //do we received a mail from bitcoin.de?
             UserDefaults.standard.set(Bool(bitcoin) ?? false, forKey: "bitcoin")
         } else {
@@ -162,12 +162,12 @@ class StudySettings {
             UserDefaults.standard.set(false, forKey: "bitcoin")
         }
         let parameters = studyParameters
-        
-        
+
+
 //        Logger.queue.async(flags: .barrier) {
         Logger.log(setupStudy: parameters, alreadyRegistered: !presentFirstQuestionaireMail)
 //        }
-        
+
     }
     //create local mail for first interview here
     static func firstMail() {
@@ -176,7 +176,7 @@ class StudySettings {
         }
         let subject = "Herzlich Willkommen in Letterbox"
         let body =
-        """
+            """
         Liebe Teilnehmerin, lieber Teilnehmer,
         
         Herzlichen Glückwunsch! Sie haben Letterbox erfolgreich installiert.
@@ -200,14 +200,14 @@ class StudySettings {
         """
         mailToParticipat(subject: subject, body: body)
     }
-    
+
     static func givecards() {
         if !studyMode || !presentFirstQuestionaireMail {
             return
         }
         let subject = "Teilnahmeentschädigung: Verlosung von Amazon-Gutscheinen"
         let body =
-        """
+            """
         Liebe Teilnehmerin, lieber Teilnehmer,
 
         unter den teilnehmenden Personen werden 20 Amazon-Gutscheine im Wert von jeweils 50 Euro verlost.
@@ -225,31 +225,31 @@ class StudySettings {
 
         PS: Diese Nachricht wurde automatisch in Letterbox erzeugt und ist nur hier gespeichert.
         """
-        
+
         mailToParticipat(subject: subject, body: body)
     }
-    
-    
-    private static func mailToParticipat(subject: String, body: String){
+
+
+    private static func mailToParticipat(subject: String, body: String) {
         let senderAdr = SUPPORT_MAIL_ADR
         let sender = MCOAddress.init(displayName: "Letterbox-Team", mailbox: senderAdr)
         var keyID: String?
-        if let addr = DataHandler.handler.findMailAddress(adr: senderAdr){
-            if let pk = addr.primaryKey{
+        if let addr = DataHandler.handler.findMailAddress(adr: senderAdr) {
+            if let pk = addr.primaryKey {
                 keyID = pk.keyID
             }
         }
         let cryptoObject = CryptoObject(chiphertext: nil, plaintext: body, decryptedData: body.data(using: .utf8), sigState: SignatureState.ValidSignature, encState: EncryptionState.ValidedEncryptedWithCurrentKey, signKey: keyID, encType: CryptoScheme.PGP, signedAdrs: [senderAdr])
-        
+
         _ = DataHandler.handler.createMail(0, sender: sender, receivers: [], cc: [], time: Date(), received: false, subject: subject, body: body, flags: MCOMessageFlag.init(rawValue: 0), record: nil, autocrypt: nil, decryptedData: cryptoObject, folderPath: UserManager.backendInboxFolderPath, secretKey: nil)
     }
-    
-  
-    
+
+
+
     public static func setupStudyKeys() {
         if studyMode || Logger.logging {
             setupStudyPublicKeys()
         }
     }
-    
+
 }
diff --git a/enzevalos_iphone/SubBadgeTableViewCell.swift b/enzevalos_iphone/SubBadgeTableViewCell.swift
index c21d1128cc45319e0dbbcfdb45c2f71620fa19ec..34fd8861b985ef9c6fb4524b2386458d10cf6de1 100755
--- a/enzevalos_iphone/SubBadgeTableViewCell.swift
+++ b/enzevalos_iphone/SubBadgeTableViewCell.swift
@@ -25,7 +25,7 @@ class SubBadgeTableViewCell: UITableViewCell {
      Displayed Badge 
      */
     @IBOutlet weak var badgeImage: UIImageView!
-    
+
 
 
 //    override func awakeFromNib() {
diff --git a/enzevalos_iphone/SwiftPGP.swift b/enzevalos_iphone/SwiftPGP.swift
index 2e98e1d1f48cb86b570520ba2286622232d0d74c..4fb88689c21efbc2275dca2f670dd0464a091a2c 100644
--- a/enzevalos_iphone/SwiftPGP.swift
+++ b/enzevalos_iphone/SwiftPGP.swift
@@ -10,7 +10,7 @@ import Foundation
 import Security
 import KeychainAccess
 
-class SwiftPGP: Encryption{
+class SwiftPGP: Encryption {
 
     let cryptoScheme = CryptoScheme.PGP
     
diff --git a/enzevalos_iphone/TableViewDataDelegate.swift b/enzevalos_iphone/TableViewDataDelegate.swift
index 4732960d0663a0e1cefa0f6196d97fe73ffc2c0f..c5ab2fd5f6f1e5cebf4eeeda804c803b51e991e7 100644
--- a/enzevalos_iphone/TableViewDataDelegate.swift
+++ b/enzevalos_iphone/TableViewDataDelegate.swift
@@ -7,33 +7,33 @@
 //
 
 
-class TableViewDataDelegate : NSObject, UITableViewDelegate, UITableViewDataSource {
-    
-    var contacts : [String] = []
-    var addresses : [String] = []
-    var pictures : [UIImage?] = []
-    var insertCallback : (String, String) -> Void = {(name : String, address : String) -> Void in return}
-    
-    init(insertCallback : @escaping (String, String) -> Void){
+class TableViewDataDelegate: NSObject, UITableViewDelegate, UITableViewDataSource {
+
+    var contacts: [String] = []
+    var addresses: [String] = []
+    var pictures: [UIImage?] = []
+    var insertCallback: (String, String) -> Void = { (name: String, address: String) -> Void in return }
+
+    init(insertCallback: @escaping (String, String) -> Void) {
         self.insertCallback = insertCallback
         super.init()
     }
-    
+
     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         return contacts.count
     }
-    
+
     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         let cell = tableView.dequeueReusableCell(withIdentifier: "contacts") as! ContactCell
         cell.name.text = contacts[indexPath.row]
         cell.address.text = addresses[indexPath.row]
-        cell.img.layer.cornerRadius = cell.img.frame.height/2
+        cell.img.layer.cornerRadius = cell.img.frame.height / 2
         cell.img.clipsToBounds = true
         cell.img.image = pictures[indexPath.row]
         if let img = pictures[indexPath.row] {
             cell.img.image = img
         }
-        
+
         if !DataHandler.handler.hasKey(adr: cell.address.text!) {
             cell.name.textColor! = UIColor.orange
             cell.address.textColor! = UIColor.orange
@@ -44,9 +44,9 @@ class TableViewDataDelegate : NSObject, UITableViewDelegate, UITableViewDataSour
         }
         return cell
     }
-    
+
     func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         self.insertCallback(contacts[indexPath.row], addresses[indexPath.row])
     }
-    
+
 }
diff --git a/enzevalos_iphone/TextFormatter.swift b/enzevalos_iphone/TextFormatter.swift
index a638b3a5030c1f25e7d07b3a26aa4a0716481711..c51b050b226bdd4722c9bcdceba142bdbc0a1f1e 100644
--- a/enzevalos_iphone/TextFormatter.swift
+++ b/enzevalos_iphone/TextFormatter.swift
@@ -9,7 +9,7 @@
 import Foundation
 
 class TextFormatter {
-    static func insertBeforeEveryLine(_ insertion: String, text: String) -> String{
+    static func insertBeforeEveryLine(_ insertion: String, text: String) -> String {
         let textSep = text.components(separatedBy: "\n")
         var ret = ""
         for t in textSep {
diff --git a/enzevalos_iphone/Theme.swift b/enzevalos_iphone/Theme.swift
index 41babe37a2b6f9869731be3f6d7a9844f9792dd5..1470eb09d624a885a22197b823f375c0690a072c 100644
--- a/enzevalos_iphone/Theme.swift
+++ b/enzevalos_iphone/Theme.swift
@@ -12,7 +12,7 @@ let SelectedThemeKey = "security_indicator"
 //var defaultColor = UIColor.groupTableViewBackgroundColor()
 let defaultColor = ThemeManager.defaultColor
 
-enum Theme: Int{
+enum Theme: Int {
     /*
      Our themes: 
      No security indicators -> no different colors, symbols
@@ -20,25 +20,25 @@ enum Theme: Int{
      Strong security indicators -> weak + different colors
      Very strong security indicators -> strong + animation
     */
-   case no_security_indicator, weak_security_indicator, strong_security_indicator, very_strong_security_indicator
-    
-    
-    var unencryptedMessageColor: UIColor{
-        switch  self {
+    case no_security_indicator, weak_security_indicator, strong_security_indicator, very_strong_security_indicator
+
+
+    var unencryptedMessageColor: UIColor {
+        switch self {
         case .no_security_indicator:
             return defaultColor
         case .weak_security_indicator:
-                return defaultColor
+            return defaultColor
         default:
             // orange
 //            return UIColor(red: 247/255, green: 185/255, blue: 0/255, alpha: 1.0)
-            return UIColor(red: 255/255, green: 204/255, blue: 0/255, alpha: 1.0)
+            return UIColor(red: 255 / 255, green: 204 / 255, blue: 0 / 255, alpha: 1.0)
 
         }
     }
-    
-    var encryptedMessageColor: UIColor{
-        switch  self {
+
+    var encryptedMessageColor: UIColor {
+        switch self {
         case .no_security_indicator:
             return defaultColor
         case .weak_security_indicator:
@@ -46,24 +46,24 @@ enum Theme: Int{
         default:
             // green
 //            return UIColor(red: 115/255, green: 229/255, blue: 105/255, alpha: 1.0)
-            return UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1.0)
+            return UIColor(red: 76 / 255, green: 217 / 255, blue: 100 / 255, alpha: 1.0)
         }
     }
-    
-    var encryptedVerifiedMessageColor: UIColor{
-        switch  self {
+
+    var encryptedVerifiedMessageColor: UIColor {
+        switch self {
         case .no_security_indicator:
             return defaultColor
         case .weak_security_indicator:
             return defaultColor
         default:
             // green
-            return UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1.0)
+            return UIColor(red: 76 / 255, green: 217 / 255, blue: 100 / 255, alpha: 1.0)
         }
     }
-    
-    var troubleMessageColor: UIColor{
-        switch  self {
+
+    var troubleMessageColor: UIColor {
+        switch self {
         case .no_security_indicator:
             return defaultColor
         case .weak_security_indicator:
@@ -71,14 +71,14 @@ enum Theme: Int{
         default:
             // red
 //            return UIColor(red: 255/255, green: 99/255, blue: 99/255, alpha: 1.0)
-            return UIColor(red: 255/255, green: 59/255, blue: 48/255, alpha: 1.0)
-            
+            return UIColor(red: 255 / 255, green: 59 / 255, blue: 48 / 255, alpha: 1.0)
+
         }
     }
 }
 
 
-struct ThemeManager{
+struct ThemeManager {
     static func currentTheme() -> Theme {
         if let storedTheme = (UserDefaults.standard.value(forKey: SelectedThemeKey) as? Int) {
             return Theme(rawValue: storedTheme)!
@@ -86,32 +86,32 @@ struct ThemeManager{
             return .very_strong_security_indicator
         }
     }
-    
-    static func unencryptedMessageColor() -> UIColor{
+
+    static func unencryptedMessageColor() -> UIColor {
         return currentTheme().unencryptedMessageColor
-    
+
     }
-    static func encryptedMessageColor() -> UIColor{
+    static func encryptedMessageColor() -> UIColor {
         return currentTheme().encryptedMessageColor
     }
-    
-    static func encryptedVerifiedMessageColor() -> UIColor{
+
+    static func encryptedVerifiedMessageColor() -> UIColor {
         return currentTheme().encryptedVerifiedMessageColor
     }
-    
-    static func troubleMessageColor() -> UIColor{
+
+    static func troubleMessageColor() -> UIColor {
         return currentTheme().troubleMessageColor
     }
-    
+
     static func animation() -> Bool {
-            return currentTheme() == .very_strong_security_indicator
+        return currentTheme() == .very_strong_security_indicator
     }
-    
+
     static func applyTheme(_ theme: Theme) {
         UserDefaults.standard.setValue(theme.rawValue, forKey: SelectedThemeKey)
         UserDefaults.standard.synchronize()
     }
-    
-    static var defaultColor: UIColor = UIColor(red: 249/255, green: 249/255, blue: 249/255, alpha: 1.0)
+
+    static var defaultColor: UIColor = UIColor(red: 249 / 255, green: 249 / 255, blue: 249 / 255, alpha: 1.0)
 }
 
diff --git a/enzevalos_iphone/UIViewResolver.swift b/enzevalos_iphone/UIViewResolver.swift
index 3c5a7aeb7885d4c6f75ba3035eb1fd24413420ec..7572a175d1ca20bb9a9b2c5d869d1c42699c863c 100644
--- a/enzevalos_iphone/UIViewResolver.swift
+++ b/enzevalos_iphone/UIViewResolver.swift
@@ -8,10 +8,10 @@
 
 import UIKit
 
-enum UIViewResolver : Int {
-    case unknown=0, cancel, imageView, send, toText, toCollectionview, ccText, ccCollectionview, subjectText, textView, tableview, scrollview
-    
-    internal static func resolve(_ tag : Int) -> String{
+enum UIViewResolver: Int {
+    case unknown = 0, cancel, imageView, send, toText, toCollectionview, ccText, ccCollectionview, subjectText, textView, tableview, scrollview
+
+    internal static func resolve(_ tag: Int) -> String {
         if let ui = UIViewResolver(rawValue: tag) {
             return String(describing: ui)
         }
diff --git a/enzevalos_iphone/UserData.swift b/enzevalos_iphone/UserData.swift
index c596df8cf958d2c3354fed9bf70a2a1aea082ef8..33849dbe7a73f5425cce617cadd9288e4a8a398c 100644
--- a/enzevalos_iphone/UserData.swift
+++ b/enzevalos_iphone/UserData.swift
@@ -171,7 +171,7 @@ struct UserManager {
         }
     }
 
-    static func loadImapAuthType() -> MCOAuthType{
+    static func loadImapAuthType() -> MCOAuthType {
         if let auth = UserManager.loadUserValue(Attribute.imapAuthType) as? Int, auth != 0 {
             return MCOAuthType.init(rawValue: auth)
         }
@@ -187,15 +187,15 @@ struct UserManager {
 
     static func loadUserSignature() -> String {
         if UserDefaults.standard.bool(forKey: "Signature.Switch"), let sig = UserDefaults.standard.string(forKey: "Signature.Text") {
-                return "\n\n______________________________\n\n\(sig.trimmingCharacters(in: .whitespacesAndNewlines))\n\n"
+            return "\n\n______________________________\n\n\(sig.trimmingCharacters(in: .whitespacesAndNewlines))\n\n"
         }
 
         return ""
     }
-    
-    static func loadInvitationMode()-> InvitationMode{
+
+    static func loadInvitationMode() -> InvitationMode {
         let mode = UserDefaults.standard.integer(forKey: "Invitation.Mode")
-        if let invitationmode = InvitationMode(rawValue: mode){
+        if let invitationmode = InvitationMode(rawValue: mode) {
             return invitationmode
         }
         return InvitationMode.Censorship
diff --git a/enzevalos_iphone/UserNameGamificationTableViewCell.swift b/enzevalos_iphone/UserNameGamificationTableViewCell.swift
index 3129698095f95aeff9360e12d41b18299809738a..e6b83e5c66f781714d8d90e5f6bb2a75355e2471 100755
--- a/enzevalos_iphone/UserNameGamificationTableViewCell.swift
+++ b/enzevalos_iphone/UserNameGamificationTableViewCell.swift
@@ -16,7 +16,7 @@ class UserNameGamificationTableViewCell: UITableViewCell {
 
     @IBOutlet weak var mailLabel: UILabel!
 
-    
+
     override func awakeFromNib() {
         super.awakeFromNib()
         // Initialization code
diff --git a/enzevalos_iphone/VENDataDelegate.swift b/enzevalos_iphone/VENDataDelegate.swift
index 12d070ead0d060dd242fbca798b467a630ee0ec2..bac44c20322558e7fcbf40b7cb37e9586eff5299 100644
--- a/enzevalos_iphone/VENDataDelegate.swift
+++ b/enzevalos_iphone/VENDataDelegate.swift
@@ -8,25 +8,25 @@
 
 import VENTokenField
 
-class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegate {
-    
-    var changeFunc: ((VENTokenField) -> Void) = {(_ : VENTokenField) -> Void in }
-    
-    var beginFunc: ((VENTokenField) -> Void) = {(_ : VENTokenField) -> Void in }
-    
-    var endFunc: ((VENTokenField) -> Void) = {(_ : VENTokenField) -> Void in }
-    
-    var deleteFunc: (() -> Void) = {() -> Void in }
-    
+class VENDataDelegate: NSObject, VENTokenFieldDataSource, VENTokenFieldDelegate {
+
+    var changeFunc: ((VENTokenField) -> Void) = { (_: VENTokenField) -> Void in }
+
+    var beginFunc: ((VENTokenField) -> Void) = { (_: VENTokenField) -> Void in }
+
+    var endFunc: ((VENTokenField) -> Void) = { (_: VENTokenField) -> Void in }
+
+    var deleteFunc: (() -> Void) = { () -> Void in }
+
     var tappedWhenSelectedFunc: ((String) -> Void)? = nil
-    
+
     var editing = false
-    
+
     override init() {
         super.init()
     }
-    
-    init(changeFunc: @escaping ((VENTokenField) -> Void), tappedWhenSelectedFunc: ((String) -> Void)?, beginFunc: @escaping ((VENTokenField) -> Void), endFunc: @escaping ((VENTokenField) -> Void), deleteFunc: @escaping (() -> Void)){
+
+    init(changeFunc: @escaping ((VENTokenField) -> Void), tappedWhenSelectedFunc: ((String) -> Void)?, beginFunc: @escaping ((VENTokenField) -> Void), endFunc: @escaping ((VENTokenField) -> Void), deleteFunc: @escaping (() -> Void)) {
         self.changeFunc = changeFunc
         self.tappedWhenSelectedFunc = tappedWhenSelectedFunc
         self.deleteFunc = deleteFunc
@@ -34,30 +34,30 @@ class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegat
         self.endFunc = endFunc
         super.init()
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, didChangeText text: String?) {
         changeFunc(tokenField)
     }
-   
+
     func tokenField(_ tokenField: VENTokenField, colorSchemeForTokenAt index: UInt) -> UIColor {
         let adr = tokenField.mailTokens[Int(index)] as! String
         var hasKey = false
-        if let madr = DataHandler.handler.findMailAddress(adr: adr){
+        if let madr = DataHandler.handler.findMailAddress(adr: adr) {
             hasKey = madr.hasKey
         }
         if hasKey {
-            return UIColor.init(red: 0, green: 122.0/255.0, blue: 1, alpha: 1)
+            return UIColor.init(red: 0, green: 122.0 / 255.0, blue: 1, alpha: 1)
         }
         return UIColor.orange
     }
-    
+
     func tokenFieldDidBeginEditing(_ tokenField: VENTokenField) {
         if !editing {
             editing = true
             beginFunc(tokenField)
         }
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, didEnterText text: String) {
         let text = text.lowercased()
         tokenField.textTokens.add(text)
@@ -66,7 +66,7 @@ class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegat
         changeFunc(tokenField)
         tokenField.sendActions(for: UIControlEvents.editingDidEnd)
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, didEnterText text: String, mail email: String) {
         let email = email.lowercased()
         tokenField.textTokens.add(text)
@@ -75,7 +75,7 @@ class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegat
         changeFunc(tokenField)
         tokenField.sendActions(for: UIControlEvents.editingDidEnd)
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, didDeleteTokenAt index: UInt) {
         tokenField.textTokens.removeObject(at: Int(index))
         tokenField.mailTokens.removeObject(at: Int(index))
@@ -83,30 +83,30 @@ class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegat
         deleteFunc()
         tokenField.sendActions(for: UIControlEvents.editingDidEnd)
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, titleForTokenAt index: UInt) -> String {
         return tokenField.textTokens[Int(index)] as! String
     }
-    
+
     func numberOfTokens(in tokenField: VENTokenField) -> UInt {
         return UInt((tokenField.textTokens.count))
     }
-    
+
     func tokenFieldCollapsedText(_ tokenField: VENTokenField) -> String {
-        var text : String = "names: "
+        var text: String = "names: "
         text.append(String(describing: tokenField.dataSource?.numberOfTokens!(in: tokenField)))
         return text
     }
-    
+
     func tokenField(_ tokenField: VENTokenField, didChangeContentHeight height: CGFloat) {
         for c in tokenField.constraints {
-            if (c.identifier == "tokenFieldHeight"){
+            if (c.identifier == "tokenFieldHeight") {
                 c.constant = height
             }
         }
     }
-    
-    func tokenFieldDidEndEditing(_ tokenF: VENTokenField){
+
+    func tokenFieldDidEndEditing(_ tokenF: VENTokenField) {
         editing = false
         if let last = tokenF.inputText() {
             if last.replacingOccurrences(of: " ", with: "") != "" {
@@ -116,7 +116,7 @@ class VENDataDelegate : NSObject, VENTokenFieldDataSource , VENTokenFieldDelegat
         endFunc(tokenF)
     }
 
-    func tokenField(_ tokenField: VENTokenField, didTappedTokenTwice index: UInt){
+    func tokenField(_ tokenField: VENTokenField, didTappedTokenTwice index: UInt) {
         if let fun = tappedWhenSelectedFunc {
             fun(tokenField.mailTokens[Int(index)] as! String)
         }
diff --git a/enzevalos_iphone/ViewControllerPannable.swift b/enzevalos_iphone/ViewControllerPannable.swift
index ab516293f6aa3fe354c610b3321286d03f1b3e00..05caeb442e7f0a305adf08b6a748b41ee89f3cf5 100644
--- a/enzevalos_iphone/ViewControllerPannable.swift
+++ b/enzevalos_iphone/ViewControllerPannable.swift
@@ -25,7 +25,7 @@ class ViewControllerPannable: UIViewController {
         if panGesture.state == .began {
             originalPosition = view.center
             currentPositionTouched = panGesture.location(in: view)
-            
+
         } else if panGesture.state == .changed {
             view.frame.origin = CGPoint(
                 x: 0,
@@ -36,16 +36,16 @@ class ViewControllerPannable: UIViewController {
 
             if velocity.y >= 1500 || translation.y >= 300 {
                 UIView.animate(withDuration: 0.2
-                               , animations: {
-                                   self.view.frame.origin = CGPoint(
-                                                                        x: self.view.frame.origin.x,
-                                                                        y: self.view.frame.size.height
-                                   )
-                               }, completion: { (isCompleted) in
-                                   if isCompleted {
-                                       self.dismiss(animated: false, completion: nil)
-                                   }
-                               })
+                    , animations: {
+                        self.view.frame.origin = CGPoint(
+                            x: self.view.frame.origin.x,
+                            y: self.view.frame.size.height
+                        )
+                    }, completion: { (isCompleted) in
+                        if isCompleted {
+                            self.dismiss(animated: false, completion: nil)
+                        }
+                    })
             } else {
                 UIView.animate(withDuration: 0.2, animations: {
                     self.view.center = self.originalPosition!
diff --git a/enzevalos_iphoneTests/CoreDataTests.swift b/enzevalos_iphoneTests/CoreDataTests.swift
index 897f3f5506015d1270c7a650beeebdbb674f2bad..af0aa81a236c54a3f7e5a218b2d1790e6389d117 100644
--- a/enzevalos_iphoneTests/CoreDataTests.swift
+++ b/enzevalos_iphoneTests/CoreDataTests.swift
@@ -32,12 +32,12 @@ import XCTest
 class CoraDataTests: XCTestCase {
     let datahandler = DataHandler.handler
     let pgp = SwiftPGP()
-    
+
     let userAdr = "alice@example.com"
     let userName = "alice"
     var user: MCOAddress = MCOAddress.init(mailbox: "alice@example.com")
     var userKeyID: String = ""
-    
+
     override func setUp() {
         super.setUp()
         datahandler.reset()
@@ -48,63 +48,63 @@ class CoraDataTests: XCTestCase {
         XCTAssertEqual(datahandler.getAddresses().count, 0)
         (user, userKeyID) = owner()
     }
-    
+
     override func tearDown() {
         datahandler.reset()
         pgp.resetKeychains()
         super.tearDown()
     }
-    
-    func createUser(adr: String = String.random().lowercased(), name: String = String.random()) -> MCOAddress{
+
+    func createUser(adr: String = String.random().lowercased(), name: String = String.random()) -> MCOAddress {
         return MCOAddress.init(displayName: name, mailbox: adr.lowercased())
     }
-    
-    func createPGPUser(adr: String = String.random().lowercased(), name: String = String.random()) -> (MCOAddress, String){
+
+    func createPGPUser(adr: String = String.random().lowercased(), name: String = String.random()) -> (MCOAddress, String) {
         let user = createUser(adr: adr, name: name)
         let id = pgp.generateKey(adr: user.mailbox)
         return (user, id)
     }
-    
-    func owner() -> (MCOAddress, String){
+
+    func owner() -> (MCOAddress, String) {
         Logger.logging = false
         let (user, userid) = createPGPUser(adr: userAdr, name: userName)
         UserManager.storeUserValue(userAdr as AnyObject, attribute: Attribute.userAddr)
         UserManager.storeUserValue(userid as AnyObject, attribute: Attribute.prefSecretKeyID)
         return (user, userid)
     }
-    
-    func testArrivingMail(){
+
+    func testArrivingMail() {
         let sender = createUser()
         let folder = "INBOX"
         XCTAssertNil(datahandler.findMailAddress(adr: sender.mailbox))
-        
-        if let mail = testMail(from: sender, to: [user], cc: [user], bcc: [], folder: folder){
+
+        if let mail = testMail(from: sender, to: [user], cc: [user], bcc: [], folder: folder) {
             XCTAssertFalse(mail.isSecure)
             XCTAssertFalse(mail.isEncrypted)
             XCTAssertFalse(mail.isSigned)
             XCTAssertFalse(mail.trouble)
             XCTAssertFalse(mail.isCorrectlySigned)
-            
+
             XCTAssert(mail.getCCs().count == 1)
             XCTAssert(mail.getCCs()[0].mailAddress == user.mailbox)
             XCTAssert(mail.getReceivers().count == 1)
             XCTAssert(mail.getReceivers()[0].mailAddress == user.mailbox)
-            
+
 
             XCTAssertNotNil(datahandler.findMailAddress(adr: sender.mailbox))
             let f = datahandler.findFolder(with: folder)
             XCTAssertEqual(f.mailsOfFolder.count, 1)
             XCTAssertEqual(f.records.count, 1)
             var containsMail = false
-            for m in f.mailsOfFolder{
-                if m == mail{
+            for m in f.mailsOfFolder {
+                if m == mail {
                     containsMail = true
                 }
             }
             XCTAssertTrue(containsMail)
             var containsAddr = false
-            for r in f.records{
-                for a  in r.addresses{
+            for r in f.records {
+                for a in r.addresses {
                     if a.mailAddress == sender.mailbox {
                         containsAddr = true
                     }
@@ -116,7 +116,7 @@ class CoraDataTests: XCTestCase {
             XCTFail("No mail")
         }
     }
-    
+
     func testMultiplePlainMailsFromOne() {
         let sender = createUser()
         let n = 100
@@ -130,8 +130,8 @@ class CoraDataTests: XCTestCase {
         XCTAssertEqual(folder.mailsOfFolder.count, n)
         XCTAssertTrue(checkOrderingOfRecord(record: folder.records.first!))
     }
-    
-    
+
+
     func testMultiplePlainMails() {
         let n = 10
         let m = 10
@@ -154,7 +154,7 @@ class CoraDataTests: XCTestCase {
             prev = record
         }
     }
-    
+
     func testMixedMails() {
         let (sender, keyID) = createPGPUser()
         let n = 10
@@ -162,7 +162,7 @@ class CoraDataTests: XCTestCase {
         let body = "mixed mails"
         let folderName = "INBOX"
         for _ in 1...n {
-            let cryptoObject = senderPGP.encrypt(plaintext: body , ids: [userKeyID], myId: keyID)
+            let cryptoObject = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: keyID)
             if let encMail = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject),
                 let plainMail = testMail(from: sender, to: [user], cc: [], bcc: []) {
                 XCTAssertTrue(encMail.isSecure && encMail.isSigned && encMail.isCorrectlySigned && encMail.isEncrypted && encMail.signedKey?.keyID == keyID)
@@ -190,18 +190,18 @@ class CoraDataTests: XCTestCase {
         XCTAssertTrue(secureRecord)
         XCTAssertTrue(insecureRecord)
     }
-    
+
     func testNewKey() {
         let (sender, keyID1) = createPGPUser()
         let senderPGP = SwiftPGP()
         let body = "mixed mails"
         let folderName = "INBOX"
-        
-        let cryptoObject1 = senderPGP.encrypt(plaintext: body , ids: [userKeyID], myId: keyID1)
+
+        let cryptoObject1 = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: keyID1)
         _ = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject1)
-        
+
         let keyID2 = pgp.generateKey(adr: sender.mailbox, new: true)
-        let cryptoObject2 = senderPGP.encrypt(plaintext: body , ids: [userKeyID], myId: keyID2)
+        let cryptoObject2 = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: keyID2)
         _ = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject2)
 
         let folder = datahandler.findFolder(with: folderName)
@@ -211,66 +211,66 @@ class CoraDataTests: XCTestCase {
             XCTAssertTrue(record.isSecure)
             XCTAssertTrue(record.keyID == keyID1 || record.keyID == keyID2)
         }
-        
-        let cryptoObject3 = senderPGP.encrypt(plaintext: body , ids: [userKeyID], myId: keyID1)
-        if let oldKeyMail = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject3){
+
+        let cryptoObject3 = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: keyID1)
+        if let oldKeyMail = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject3) {
             XCTAssertTrue(oldKeyMail.isSecure)
         }
     }
-    
-    func testOwnRecord(){
+
+    func testOwnRecord() {
         let (sender, keyID) = createPGPUser()
         let body = "enc with old key"
         let folderName = "INBOX"
         let oldID = userKeyID
-       
+
         var myrecord = datahandler.getKeyRecord(addr: userAdr, keyID: datahandler.prefSecretKey().keyID)
         XCTAssertEqual(myrecord.keyID, userKeyID)
         XCTAssertEqual(myrecord.ezContact.records.count, 1)
 
-        
-        let cryptoObject1 = pgp.encrypt(plaintext: body , ids: [oldID], myId: keyID)
+
+        let cryptoObject1 = pgp.encrypt(plaintext: body, ids: [oldID], myId: keyID)
         _ = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: cryptoObject1)
         let myContact = datahandler.getContactByAddress(userAdr)
-        
+
         if let newKeyIDs = try? pgp.importKeys(key: CryptoTests.importKey, pw: CryptoTests.importPW, isSecretKey: true, autocrypt: false), let newKeyId = newKeyIDs.first {
             _ = datahandler.newSecretKey(keyID: newKeyId, addPk: true)
             XCTAssertTrue(newKeyId == datahandler.prefSecretKey().keyID)
             XCTAssertTrue(userKeyID != newKeyId)
-            
+
             let key = datahandler.findSecretKey(keyID: datahandler.prefSecretKey().keyID!)
             XCTAssertNotNil(key)
             XCTAssertTrue(key?.keyID == newKeyId)
-            
+
             myrecord = datahandler.getKeyRecord(addr: userAdr, keyID: datahandler.prefSecretKey().keyID)
-            
-            
+
+
             XCTAssertEqual(myrecord.keyID, newKeyId)
             XCTAssertEqual(myrecord.ezContact.records.count, 2)
             XCTAssertTrue(myrecord.isSecure)
             XCTAssertEqual(myContact.publicKeys.count, 2)
-            let cryptoObject2 = pgp.encrypt(plaintext: body , ids: [newKeyId], myId: keyID )
+            let cryptoObject2 = pgp.encrypt(plaintext: body, ids: [newKeyId], myId: keyID)
             let decryptObject2 = pgp.decrypt(data: cryptoObject2.chiphertext!, decryptionIDs: [newKeyId], verifyIds: [keyID], fromAdr: sender.mailbox)
 
             _ = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: decryptObject2)
-            
-            let cryptoObject3 = pgp.encrypt(plaintext: body , ids: [oldID], myId: keyID)
+
+            let cryptoObject3 = pgp.encrypt(plaintext: body, ids: [oldID], myId: keyID)
             let decryptObject3 = pgp.decrypt(data: cryptoObject3.chiphertext!, decryptionIDs: [oldID], verifyIds: [keyID], fromAdr: sender.mailbox)
             let oldMail = testMail(from: sender, to: [user], cc: [], bcc: [], folder: folderName, cryptoObject: decryptObject3)
-            
+
             XCTAssertTrue((oldMail?.decryptedWithOldPrivateKey)!)
-            
-        
+
+
         } else {
             XCTFail("No new key")
             return
         }
     }
-    
-    
-    func checkOrderingOfRecord(record: KeyRecord) -> Bool{
+
+
+    func checkOrderingOfRecord(record: KeyRecord) -> Bool {
         var prev: PersistentMail?
-        for m in record.mails{
+        for m in record.mails {
             if let prev = prev {
                 if prev.date < m.date {
                     return false
@@ -280,13 +280,13 @@ class CoraDataTests: XCTestCase {
         }
         return true
     }
-    
-    func testMail(from: MCOAddress, to: [MCOAddress], cc: [MCOAddress], bcc: [MCOAddress], flags: MCOMessageFlag = MCOMessageFlag.init(rawValue: 0), folder: String = "INBOX" , date: Date = Date(timeIntervalSince1970: TimeInterval(arc4random())), cryptoObject: CryptoObject? = nil, body: String = String.random(length: 20)) -> PersistentMail?{
-        
+
+    func testMail(from: MCOAddress, to: [MCOAddress], cc: [MCOAddress], bcc: [MCOAddress], flags: MCOMessageFlag = MCOMessageFlag.init(rawValue: 0), folder: String = "INBOX", date: Date = Date(timeIntervalSince1970: TimeInterval(arc4random())), cryptoObject: CryptoObject? = nil, body: String = String.random(length: 20)) -> PersistentMail? {
+
         let subject = String.random(length: 20)
         let id = UInt64(arc4random())
         var body = body
-        
+
         if let decryptedBody = cryptoObject?.decryptedText {
             body = decryptedBody
         }
@@ -296,7 +296,7 @@ class CoraDataTests: XCTestCase {
         XCTAssertEqual(mail?.body, body)
         XCTAssertEqual(mail?.subject, subject)
         XCTAssertEqual(mail?.folder.name.lowercased(), folder.lowercased())
-        
+
         return mail
     }
 }
diff --git a/enzevalos_iphoneTests/CryptoTests.swift b/enzevalos_iphoneTests/CryptoTests.swift
index c5cb6fad349b8f03d9022a77becbf0c965c52e7e..48e0d6c407b9b158b03cfac94084b87d0c3aa60d 100644
--- a/enzevalos_iphoneTests/CryptoTests.swift
+++ b/enzevalos_iphoneTests/CryptoTests.swift
@@ -10,19 +10,19 @@ import XCTest
 
 @testable import enzevalos_iphone
 class CryptoTests: XCTestCase {
-    
+
     //TODO: test importkey: public, autocrypt
     //      test export key: public, secret
     //      implement signature check
-    
+
     let datahandler = DataHandler.handler
     let pgp = SwiftPGP()
-    
+
     let userAdr = "alice@example.com"
     let userName = "alice"
     var user: MCOAddress = MCOAddress.init(mailbox: "alice@example.com")
     var userKeyID: String = ""
-    
+
     static let importPW = "alice"
     static let importKey = """
     -----BEGIN PGP PUBLIC KEY BLOCK-----
@@ -185,7 +185,7 @@ class CryptoTests: XCTestCase {
     =U2bk
     -----END PGP PRIVATE KEY BLOCK-----
     """
-    
+
     let keyForSignedMessage = """
     -----BEGIN PGP PUBLIC KEY BLOCK-----
 
@@ -345,7 +345,7 @@ class CryptoTests: XCTestCase {
     -----END PGP PRIVATE KEY BLOCK-----
 
     """
-    
+
     let signedMessage = """
     -----BEGIN PGP SIGNATURE-----
 
@@ -362,7 +362,7 @@ class CryptoTests: XCTestCase {
     =OmRP
     -----END PGP SIGNATURE-----
     """
-    
+
     let manipulatedSignedMail = """
     -----BEGIN PGP SIGNATURE-----
 
@@ -379,52 +379,52 @@ class CryptoTests: XCTestCase {
     =OmRP
     -----END PGP SIGNATURE-----
     """
-    
-    
+
+
     override func setUp() {
         super.setUp()
         datahandler.reset()
         pgp.resetKeychains()
         (user, userKeyID) = owner()
     }
-    
+
     override func tearDown() {
         datahandler.reset()
         super.tearDown()
     }
-    
-    func createUser(adr: String = String.random().lowercased(), name: String = String.random()) -> MCOAddress{
+
+    func createUser(adr: String = String.random().lowercased(), name: String = String.random()) -> MCOAddress {
         return MCOAddress.init(displayName: name, mailbox: adr.lowercased())
     }
-    
-    func createPGPUser(adr: String = String.random().lowercased(), name: String = String.random()) -> (address: MCOAddress, keyID: String){
+
+    func createPGPUser(adr: String = String.random().lowercased(), name: String = String.random()) -> (address: MCOAddress, keyID: String) {
         let user = createUser(adr: adr, name: name)
         let id = pgp.generateKey(adr: user.mailbox)
         return (user, id)
     }
-    
-    func owner() -> (MCOAddress, String){
+
+    func owner() -> (MCOAddress, String) {
         Logger.logging = false
         let (user, userid) = createPGPUser(adr: userAdr, name: userName)
         UserManager.storeUserValue(userAdr as AnyObject, attribute: Attribute.userAddr)
         UserManager.storeUserValue(userid as AnyObject, attribute: Attribute.prefSecretKeyID)
         return (user, userid)
     }
-    
-    func createSender(n: Int)-> [MCOAddress:String]{
-        var result = [MCOAddress:String]()
-        
-        for _ in 1...n{
+
+    func createSender(n: Int) -> [MCOAddress: String] {
+        var result = [MCOAddress: String]()
+
+        for _ in 1...n {
             let adr = String.random()
             let name = String.random()
-            
-            let (mcoaddr, id) =  createPGPUser(adr: adr, name: name)
+
+            let (mcoaddr, id) = createPGPUser(adr: adr, name: name)
             result[mcoaddr] = id
         }
         return result
     }
-    
-    func testKeyGen(){
+
+    func testKeyGen() {
         guard let key = pgp.loadKey(id: userKeyID) else {
             XCTFail("No key")
             return
@@ -436,17 +436,17 @@ class CryptoTests: XCTestCase {
         XCTAssertTrue(key.isPublic && key.isSecret)
         var containsAddr = false
         for user in pk.users {
-            if user.userID.contains(userAdr){
+            if user.userID.contains(userAdr) {
                 containsAddr = true
             }
-            else{
+            else {
                 XCTFail("userID does not contain userAddr")
             }
         }
         XCTAssertTrue(containsAddr)
     }
-    
-    func testimportSecretKey(){
+
+    func testimportSecretKey() {
         XCTAssert(datahandler.prefSecretKey().keyID == userKeyID)
         XCTAssertEqual(datahandler.findSecretKeys().count, 1)
         guard let keys = try? pgp.importKeys(key: CryptoTests.importKey, pw: CryptoTests.importPW, isSecretKey: true, autocrypt: false) else {
@@ -459,7 +459,7 @@ class CryptoTests: XCTestCase {
         }
         XCTAssert(keys.count == 1)
         XCTAssert(key == "008933003B986364")
-        
+
         // Test storing a key
         _ = datahandler.newSecretKey(keyID: key, addPk: true)
         XCTAssert(datahandler.prefSecretKey().keyID == key)
@@ -467,12 +467,12 @@ class CryptoTests: XCTestCase {
         XCTAssertEqual(datahandler.findSecretKeys().count, 2)
 
     }
-    
-    func testPlainMail(){
+
+    func testPlainMail() {
         let body = "plain message"
         guard let data = body.data(using: .utf8) else {
             XCTFail("No data")
-            return 
+            return
         }
         let cryptoObject = pgp.decrypt(data: data, decryptionId: userKeyID, verifyIds: [], fromAdr: nil)
         XCTAssert(cryptoObject.encryptionState == .NoEncryption)
@@ -480,54 +480,54 @@ class CryptoTests: XCTestCase {
         XCTAssert(cryptoObject.decryptedData == nil && cryptoObject.decryptedText == nil && cryptoObject.signKey == nil)
         XCTAssert(cryptoObject.plaintext == body)
     }
-    
-    func testEncMail(){
+
+    func testEncMail() {
         let body = "encrypted text"
         let senderPGP = SwiftPGP()
         let encryptedObject = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: "")
         XCTAssert(encryptedObject.encryptionState == .ValidedEncryptedWithCurrentKey && encryptedObject.signatureState == .NoSignature)
-        
+
         guard let data = encryptedObject.chiphertext else {
             XCTFail("No chipher data")
             return
-        }        
+        }
         let cryptoObject = pgp.decrypt(data: data, decryptionId: userKeyID, verifyIds: [], fromAdr: nil)
         XCTAssert(cryptoObject.encryptionState == .ValidedEncryptedWithCurrentKey)
         XCTAssert(cryptoObject.signatureState == .NoSignature)
         XCTAssert(cryptoObject.plaintext == body && cryptoObject.plaintext == cryptoObject.decryptedText)
     }
-    
-    func testSignedMail(){
+
+    func testSignedMail() {
         // import keys and data for signature test
         guard let keys = try? pgp.importKeys(key: keyForSignedMessage, pw: nil, isSecretKey: true, autocrypt: false), keys.count > 0 else {
             XCTFail("Can not import key")
             return
         }
-        guard let signedData = signedMessage.data(using: .utf8), let manipulatedDate = manipulatedSignedMail.data(using: .utf8) else{
+        guard let signedData = signedMessage.data(using: .utf8), let manipulatedDate = manipulatedSignedMail.data(using: .utf8) else {
             XCTFail("No signed data")
             return
         }
-        
+
         // 1. case: correct signed mail
         var cryptoObject = pgp.decrypt(data: signedData, decryptionId: keys.first, verifyIds: keys, fromAdr: nil)
         XCTAssert(cryptoObject.encryptionState == .NoEncryption && cryptoObject.signatureState == .ValidSignature)
         XCTAssert(cryptoObject.decryptedText == "only a signed mail!")
-        
+
         // 2. case: manipulated mail
         cryptoObject = pgp.decrypt(data: manipulatedDate, decryptionId: keys.first, verifyIds: keys, fromAdr: nil)
         XCTAssert(cryptoObject.encryptionState == .NoEncryption && cryptoObject.signatureState == .InvalidSignature)
     }
-    
-    func testEncSignedMail(){
+
+    func testEncSignedMail() {
         let body = "signed text"
         let (senderAddress, senderID) = createPGPUser()
         let (_, id2) = createPGPUser()
 
         let senderPGP = SwiftPGP()
         let encObject = senderPGP.encrypt(plaintext: body, ids: [userKeyID], myId: senderID)
-        XCTAssert(encObject.encryptionState == .ValidedEncryptedWithCurrentKey && encObject.signatureState == SignatureState.ValidSignature )
+        XCTAssert(encObject.encryptionState == .ValidedEncryptedWithCurrentKey && encObject.signatureState == SignatureState.ValidSignature)
         let falseEncObject = senderPGP.encrypt(plaintext: body, ids: [], myId: senderID)
-        
+
         guard let data = encObject.chiphertext, let data2 = falseEncObject.chiphertext else {
             XCTFail("no chipher data")
             return
@@ -537,17 +537,17 @@ class CryptoTests: XCTestCase {
         XCTAssert(cryptoObject.encryptionState == .ValidedEncryptedWithCurrentKey)
         XCTAssert(cryptoObject.signatureState == .NoPublicKey)
         XCTAssert(cryptoObject.plaintext == body && cryptoObject.plaintext == cryptoObject.decryptedText)
-        
+
         // 2. case: signed and public key available
         cryptoObject = pgp.decrypt(data: data, decryptionId: userKeyID, verifyIds: [senderID, id2], fromAdr: nil)
         XCTAssert(cryptoObject.signatureState == .ValidSignature)
         XCTAssert(cryptoObject.signKey == senderID)
         XCTAssert(cryptoObject.signedAdrs.contains(senderAddress.mailbox) && cryptoObject.signedAdrs.count == 1)
-    
+
         // 3. case: signed and check with wrong key
         cryptoObject = pgp.decrypt(data: data, decryptionId: userKeyID, verifyIds: [id2], fromAdr: nil)
         XCTAssert(cryptoObject.signatureState == .NoPublicKey)
-       
+
         // 4. case: can not decrypt (wrong/missing decryption/encryption key)
         cryptoObject = pgp.decrypt(data: data2, decryptionId: userKeyID, verifyIds: [senderID], fromAdr: nil)
         XCTAssert(cryptoObject.encryptionState == .UnableToDecrypt && cryptoObject.signatureState == .NoSignature)
@@ -556,7 +556,7 @@ class CryptoTests: XCTestCase {
         // Import a new secret key -> previous key is now an old key
         guard let keys = try? pgp.importKeys(key: CryptoTests.importKey, pw: CryptoTests.importPW, isSecretKey: true, autocrypt: false), keys.count > 0 else {
             XCTFail("Can not import key")
-            return 
+            return
         }
         XCTAssertEqual(keys.count, 1)
         _ = datahandler.newSecretKeys(keyIds: keys, addPKs: true)
@@ -567,5 +567,5 @@ class CryptoTests: XCTestCase {
         XCTAssert(cryptoObject.decryptedText == body)
     }
 
-    
+
 }
diff --git a/enzevalos_iphoneTests/InvitationTests.swift b/enzevalos_iphoneTests/InvitationTests.swift
index abbf3e3bc351b2cd693e7be49998a19ac2716501..228e42c8fedd7ffd5099e325498281be2c45f137 100644
--- a/enzevalos_iphoneTests/InvitationTests.swift
+++ b/enzevalos_iphoneTests/InvitationTests.swift
@@ -12,34 +12,34 @@ import XCTest
 
 class InvitationTests: XCTestCase {
 
-	func testWordsInString() {
+    func testWordsInString() {
 
-		let string = "Diese App hat viele Vorteile"
-		let firstStringRange = NSRange(location: 0, length: 5)
-		let secondStringRange = NSRange(location: 7, length: 9)
+        let string = "Diese App hat viele Vorteile"
+        let firstStringRange = NSRange(location: 0, length: 5)
+        let secondStringRange = NSRange(location: 7, length: 9)
 
-		let firstResult = string.words(inRange: firstStringRange)
-		let secondResult = string.words(inRange: secondStringRange)
+        let firstResult = string.words(inRange: firstStringRange)
+        let secondResult = string.words(inRange: secondStringRange)
 
-		XCTAssertEqual(firstResult?.words, "Diese")
-		XCTAssertEqual(firstResult?.extendedRange, firstStringRange)
+        XCTAssertEqual(firstResult?.words, "Diese")
+        XCTAssertEqual(firstResult?.extendedRange, firstStringRange)
 
-		XCTAssertEqual(secondResult?.words, "App hat viele")
-		XCTAssertEqual(secondResult?.extendedRange, NSRange(location: 6, length: 13))
-	}
+        XCTAssertEqual(secondResult?.words, "App hat viele")
+        XCTAssertEqual(secondResult?.extendedRange, NSRange(location: 6, length: 13))
+    }
 
-	func testEncryptAndDecryptStrings() {
+    func testEncryptAndDecryptStrings() {
 
-		let texts = ["Kontonummer", "DE 12345 625636 23", "Alice und Bob", "@~> ™", "12207", "🤨", "🤨 ABC123", "Hallo,\nwie geht es dir?🤨\n\nich bin hier und mir geht es gut"]
-		let pgp = SwiftPGP()
+        let texts = ["Kontonummer", "DE 12345 625636 23", "Alice und Bob", "@~> ™", "12207", "🤨", "🤨 ABC123", "Hallo,\nwie geht es dir?🤨\n\nich bin hier und mir geht es gut"]
+        let pgp = SwiftPGP()
 
         let encryption = pgp.symmetricEncrypt(textToEncrypt: texts, armored: true, password: nil)
 
-		XCTAssertEqual(encryption.chiphers.count, texts.count)
-		XCTAssertEqual(encryption.password.count, 9)
+        XCTAssertEqual(encryption.chiphers.count, texts.count)
+        XCTAssertEqual(encryption.password.count, 9)
 
-		let decryption = pgp.symmetricDecrypt(chipherTexts: encryption.chiphers, password: encryption.password)
+        let decryption = pgp.symmetricDecrypt(chipherTexts: encryption.chiphers, password: encryption.password)
 
-		XCTAssertEqual(decryption, texts)
-	}
+        XCTAssertEqual(decryption, texts)
+    }
 }
diff --git a/enzevalos_iphoneUITests/enzevalos_iphoneUITests.swift b/enzevalos_iphoneUITests/enzevalos_iphoneUITests.swift
index 41c9ff23ebbbad816cfdc2356b15983361a48216..2972af180548f49fea0702ea310ed3b28e69bee5 100644
--- a/enzevalos_iphoneUITests/enzevalos_iphoneUITests.swift
+++ b/enzevalos_iphoneUITests/enzevalos_iphoneUITests.swift
@@ -9,12 +9,12 @@
 import XCTest
 
 class enzevalos_iphoneUITests: XCTestCase {
-        
+
     override func setUp() {
         super.setUp()
-        
+
         // Put setup code here. This method is called before the invocation of each test method in the class.
-        
+
         // In UI tests it is usually best to stop immediately when a failure occurs.
         continueAfterFailure = false
         // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.
@@ -22,15 +22,15 @@ class enzevalos_iphoneUITests: XCTestCase {
 
         // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.
     }
-    
+
     override func tearDown() {
         // Put teardown code here. This method is called after the invocation of each test method in the class.
         super.tearDown()
     }
-    
+
     func testExample() {
         // Use recording to get started writing UI tests.
         // Use XCTAssert and related functions to verify your tests produce the correct results.
     }
-    
+
 }