Implemented SyncAdapter and SyncService classes.
Implemented Sync Adapter.
Removed SyncServices.
Renamed functions in SyncUtils.
Merge branch 'master' into sync-adapter
Merge branch 'master' into sync-adapter
Adjusted log messages in SyncAdapter.
Simpified function that enables/disables periodic alarm sync.
Changed name of periodic sync function to more informative.
All list fragments now use the same menu with refresh button.