Implementing android error handler
Merge branch 'develop' of github.com:watzenare/pushApi into improve-send-workers
- Handled android error responses:
- user has uninstalled the app or hasn't that id -> delete the android_id
- user is unreachable -> resend the notification
- user id has chanded -> update user id with the new one
Merge pull request #11 from watzenare/improve-send-workers

Improve send workers