Created Database classes and basic account creation page
Merge remote-tracking branch 'origin/Sebastian' into alex
- simplified ThreadManager
- fixed ImageSwipeViewActivity
- fixed ImageSwipeViewActivity again
Merge remote-tracking branch 'origin/alex' into alex

Conflicts:
	app/src/main/AndroidManifest.xml
Merge remote-tracking branch 'origin/dev' into alex
UserImageGridViewActivity
Merge remote-tracking branch 'origin/dev' into alex