added messaging list ui
add sending messages
improved a bit
fix broken commit
more reliable gcm processing
add recipients list logc
change api signature
Merge branches 'feature/messaging-list' and 'master' of https://github.com/iveyalkin/device-radar

Conflicts:
	app/src/main/java/org/bitbucket/rocketracoons/deviceradar/network/ApiClient.java