[ADD] Android: Content Provider as overall message handler.
[ADD] Android: SQLite to save and manage all received messages.
[ADD] Android: StartupIntentReceiver to start the MessageService after Boot.
[ADD] Android: Guava Library
[ADD] Android: DateFormat with ISO8601.
[ADD] Android: Own USER-AGENT for HTTP requests.
[ADD] Android: Add intent to contacts after long-clicking a contact in App.
[CHG] Android: All phone numbers are represented by the class "PhoneNumber".
[CHG] Android: AES SecretKey and IV can be set from outside.
[ADD] GAE: Start page with Login
[ADD] GAE: Template-Engine jinja2
[ADD] GAE: Memcache at different places
[CHG] GAE: API-Calls moved to api.py.
[CHG] GAE: Messages now have pushed and readed datetimes.
[ADD] Images for message status
[ADD] Image with an status in an message row
[ADD] Default settings activity
[ADD] Class for MailAddresses, equivalent PhoneNumber
[ADD] Methods to create / verify a signature (SHA512withRSA).
[CHG] MessageActivity works with an ContentProvider (MessageContentProvider)