many fixed warnings

ObjectivePGP.h

ObjectivePGP.m

enzevalos_iphone.xcodeproj/project.pbxproj

enzevalos_iphone/AppDelegate.swift

enzevalos_iphone/Base.lproj/Main.storyboard

enzevalos_iphone/DataHandler.swift

enzevalos_iphone/Encryption.swift

enzevalos_iphone/EncryptionHandler.swift

enzevalos_iphone/IconsStyleKit.swift

enzevalos_iphone/InitViewController.swift

enzevalos_iphone/LogHandler.swift

enzevalos_iphone/MailHandler.swift

enzevalos_iphone/OnboardingViewCells.swift

enzevalos_iphone/OnboardingViewController.swift

enzevalos_iphone/PGPEncryption.swift

enzevalos_iphone/PGPKeyManagement.swift

enzevalos_iphone/SendViewController.swift

enzevalos_iphone/SwitchCell.xib

enzevalos_iphone/UserData.swift