Add Ratan to the contributors (About)
Add ratan's full name (Authors)
Update opensource info (About)
Add translations info (About)
Rename getauth method for consistency (AccountService)
Simplify return in the getAccount method (AccountService)
Change newPassword into password for consistency in the updatePassword method (AccountService)
Fix freeze bug when an user pressed on add account in the settings (AccountService)
Remove unused method onDestroy (AccountService)
Add JavaDOC (AccountService)
Fix indents (AccountService)
Remove TODO comments created by Android Studio (Provider)
Fix indents (SyncService)
Remove unnecessary static assignments (PrefManager)
Create method for deleting old pref accounts and apply it (PrefManager & FirstTimeInit)
Crashlytics Integration

Add integration for Crashlytics tool.
Merge pull request #251 from ratan12/removeaccount

Remove old account in prefrences
Merge pull request #249 from ratan12/AccountManager

Account manager (Cleanup & bugfix)
Merge pull request #248 from ratan12/about

About (Update opensource info, add Ratan12 & add translations card)