Remove unused properties
Works but UGLY
Fix client drawing performance
Use p2p mesh instead of client server to communicate drawings
Merge remote-tracking branch 'origin/master'

Conflicts:
	DoodleKit/DoodleKit/Drawing/DKSerializer.m
synchonized timers between doodlers
Merge remote-tracking branch 'origin/backend-merge' into doodleSessions

Conflicts:
	DoodleKit/DoodleKit/Networking/GTMatchMessenger.h
	DoodleKit/DoodleKit/Networking/GTMatchMessenger.m
	DoodleKitExample/DoodleKitExample/DKBoardController.m