update ExampleApp to demonstrate static files

ExampleApp/Extra/__init__.py

 from flask import render_template
 
 def home():
-  return render_template('home.html')
+  return render_template('extra_home.html')
\ No newline at end of file

ExampleApp/Extra/static/extra-style.css

+body {
+  width:100%;
+  height:300px;
+  background:#fff;
+}
+#global_app_menu {
+  background:#ccc;
+}
+
+#content {
+  background:#eee;
+}
+
+#header {
+  background:#aaa;
+}
+
+#footer {
+  background:#ccc;
+}
\ No newline at end of file

ExampleApp/Extra/templates/extra_home.html

+{% extends "base-struct.html" %}
+{% block title %}Index{% endblock %}
+{% block head %} {{ super() }} 
+<link rel="stylesheet" href="/ExampleApp.Extra/static/extra-style.css" />
+{% endblock %}
+{% block content %}
+    <h1>Extra</h1>
+    <p>samsHub Startseite: {{ app_lang['hello_message'] }}</p>
+{% endblock %}
+{% block header %}samsHUB -{% endblock %}
\ No newline at end of file

ExampleApp/static/style.css

@@ -8,7 +8,7 @@ body {
 }
 
 #content {
-  background:#cff;
+  background:#fcf;
 }
 
 #header {