added installed apps activity with tabs
Added a temporary way to show a list of apps.
removed tabs and added dummy list
icons and names from installed apps are displayed
Prepared Testing: Mockito added
http://www.androidhive.info/2013/09/android-sqlite-database-with-multiple-tables/
http://www.vogella.com/tutorials/AndroidSQLite/article.html
Added Database Classes
ADDED Database handling for apps
cleaned and commented database code
Merge branch 'feature/LocalAppDB' into feature/InstalledApps
Merge branch 'feature/LocalAppDB' into feature/RecentApps

Conflicts:
	src/de/otaris/zertapps/privacychecker/HomeActivity.java
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
Nur kleinere Anpassungen.
Listen Adapter von Nico&Lukas übertragen.

Imports aufräumen.

Timestamp in AppDataSource und App eingepflegt.
-> App: Attribut, Getter, Setter
-> AppDataSource: getLastUpdatedApps

HomeActivity: Alte Hardcoded Zeilen entfernt.
added tests and fixed list sorting
fixed test dependencies