Fix some issues

https://github.com/DrKLO/Telegram/issues/468
https://github.com/DrKLO/Telegram/issues/464
https://github.com/DrKLO/Telegram/issues/394
https://github.com/DrKLO/Telegram/issues/334
Restore unread count after app close
Bug fixes
Fixed broken photo viewer after main activity destroy
Attempt to fix wrong unread count in notification
Bug fixes
Finally fix wrong unread count
Bug fixes
Fixed Alert EditText background on 2.x
Bug fixes
Fixed some bugs, upload locales
Bug fixes
Try to login in different DC if current is unavailable
Bug fixes
Merge pull request #29 from DrKLO/dev

sync fork