Small bugfixes
Support for API level 8
Notifications
Notifications in android.
Incomming GCM messages are displayed and zoomed on the map.
Merge branch 'master' into tomucha-na-speedu

Conflicts:
	coordinator-android/src/cz/clovekvtisni/coordinator/android/event/EventActivity.java
	coordinator-android/src/cz/clovekvtisni/coordinator/android/event/map/view/NetworkTileLoader.java
	coordinator-android/src/cz/clovekvtisni/coordinator/android/util/DiskCache.java
Finished merge.