Update helpshift SDK to 2.2.0
Update Helpshift SDK to 2.3.0
Update Helpshift SDK to 2.4.0
Remove NotificationCountApp
Add AndroidManifest entry for in-app notification service.
Update Helpshift SDK to 2.5.0
Change push handling to use new handlePush API. (UA-push)
Change push handling to use new handlePush API. (GCM-push)
Add AndroidManifest entries for HSRetryService.