added installed apps activity with tabs
removed tabs and added dummy list
icons and names from installed apps are displayed
Prepared Testing: Mockito added
Merge branch 'feature/LocalAppDB' into feature/InstalledApps
added database connection
updated app model
added icon to apps list again
added mockito lib and sample activity test
ADDED retrieve Apps from mobile and put them into database
fixed comment issues and use of AppController
added tests and fixed list sorting
fixed test dependencies
fixed review annotations
prepared installed apps activity for use of roboguice
fixed open issues after review
Merge branch 'feature/InstalledApps' into develop

Conflicts:
	src/de/otaris/zertapps/privacychecker/database/App.java
Merge branch 'develop'

Conflicts:
	src/de/otaris/zertapps/privacychecker/AppListItemAdapter.java
	src/de/otaris/zertapps/privacychecker/HomeActivity.java
	src/de/otaris/zertapps/privacychecker/database/App.java
	src/de/otaris/zertapps/privacychecker/database/AppDataSource.java
Removed code duplicates.

Put installed apps into database only on appstart.
Removed it from calling installed apps.

Created list of last updated apps only on appstart.

Show them everytime you return to the homescreen.