Multiple fixes

[milinddeore]

This issues addresses multiple fix and they are following:

1. During registration useremail was not passing this cause many issue, including revoke failure, device sync failure, etc.
2. File message bubble is not showing proper status.
3. Device sync code
4. Due to lack of event based getFileAccessStatus call, the privitty messages were shown as gibberish text. This was also seen in the chatlist message-preview. Specially during application reload.
5. Many error in the privitty-server logs due to incorrect checks in the code.