OC-208: suffix remote.php/webdav. OC-34
OC-208: Changes from comments
Fixed repeated request for create first account when all the accounts where removed after the app was left in an actitivy not root in its task
PreviewImageActivity protected against access to non-existing account
PreviewVideoActivity protected against access to non-exiting account
Fixed bad transitions after adding protection for removed accounts to PreviewVideoActivity
Merge pull request #178 from owncloud/login_smart_clip_of_URL_suffix

OC-208: suffix remote.php/webdav. OC-34
Merge remote-tracking branch 'origin/develop' into check_account_existance_in_gallery