GitLab

 - CalendarAppWidgetReceiver now functions as the broadcast receiver for:
     * android.intent.action.TIMEZONE_CHANGED
     * android.intent.action.TIME_SET
     * android.intent.action.PROVIDER_CHANGED (content://com.android.calendar)
 - CalendarAppWidgetService has been refactored to use IntentService for
   serializing widget updates
 - AppWidgetShared has been preserved for managing wake locks
 - CalendarAppWidgetModel was pulled out into its own class

Change-Id: If7641aba278acc8ad00f14acd289ddbcbb1d5bcf