add Application Started event
log all GCM register exceptions
log all catched exceptions in crashlytics
3.0.2-beta-1 version bump
track new events in mixpanel, for debugging purposes, could be removed after 3.0.x fix
getBooleanRemoteControlField: default to false in case the field it not explicitly equals _true_
Merge pull request #1731 from wordpress-mobile/issue/3.0.2-beta-1

preparing a 3.0.2 beta 1