Using gradle project structure

Moved:
src -> src/main/java
res -> src/main/res
assets -> src/main/assets
Basic unit testing - not tested yet

Was not tested because this was created without internet connection -> dependencies could not be resolved
Unit tests are working.

The SanityTest was now adapted not to fail. Used as a proof that unit tests are working.
Added robolectric.

To write more tests.
Removed some unused classes. Improved sync...
Faster sync. Updating instead of deleting.
Renamed package again (released to play store before)
Version bump, Release
[[Finish 66410588]] User sees sync status

Action Bar now shows sync status
[finish #66414228] Refresh Action is now shown in action bar
Allergene details are written to log.
Started menu detail fragment
Added basic testing.
better empty ui
[[Finish 65055024]]
Merge branch 'develop' of github.com:ironjan/MensaUPB into develop

Conflicts:
	src/de/najidev/mensaupb/stw/StwParser.java