Refactore Notification and Brodcasts
Remove unnecessary comment and imports
Refactore App class
Add intervals for service and Refactore SyncService
Add OnFetchUser and OnFetched interfaces
Merge branch 'force-start-sync-service-after-signup'
Add more unit tests for OkCallback in FetchUserListenerTest and Fix compile errors
Merge branch 'add-and-fix-tests-for-fetchuserlistener'
Merge branch 'master' into reset-viewswithcer-on-recycle
Reset ViewSwticher to default zero child on recycle
Merge branch 'reset-viewswithcer-on-recycle'
Merge branch 'master' into rework-tpa