Started refactoring to use GCM instead of C2DM
Minor params update
Use real style GCM sender id, remove C2DM receiver from the manifest
Move everything into GCMIntentService and kill C2DMReceiver
Constants in DateUtilities should be final
Fixed a bug where an AB test wasn't being initialized correctly; restart the test
Merge remote-tracking branch 'origin/121212_sb_gcm'
Version bump (so the GCM migration will work)