adjusted icon size
Tried to change from start/stop service to bind/unbind service
Established connection between Service and activity
Merge pull request #19 from froehr/feature/MotionGesture

Feature/motion gesture
Merge remote-tracking branch 'origin/feature/DatabaseAccess' into develop

Conflicts:
	app/app.iml
	app/src/main/java/de/ifgi/igiapp/igi_app/MapsActivity.java
Merge conflicts resolved
Fixed bug after pull request
Added caching of DB-Features (distinction between "request" and "get")