+ SettingsActivity
+ slight code cleanup
+ Calendar (incomplete)
~ changed server Paths
* improved ChatroomPagerAdapter
~ revert back to support Fragments, because they only support nested Fragments since API 17
Merge branch 'master' of github.com:jakobwenzel/rallye-android-client

Conflicts:
	RallyeSoft/src/main/AndroidManifest.xml
	RallyeSoft/src/main/java/de/stadtrallye/rallyesoft/fragments/AboutDialogFragment.java