Write all exceptions to log file
keyring: check keyring usability and disable remember password function accordingly.
Merge pull request #89 from Aetf/keyring-check-patch

Check keyring usability and disable remember password function accordingly
Add comment about gnome-keyring; https://github.com/LiuLang/bcloud/issues/63#issuecomment-62442552
Merge branch 'master' of github.com:LiuLang/bcloud
Support mobile authorization; https://github.com/LiuLang/bcloud/issues/59
Fixed: wraong parameter in get_token()
Add SIDEBAR class to treevie
Add SMS verification dialog
Remove SMS verification dialog; https://github.com/LiuLang/bcloud/issues/59#issuecomment-63225014
Fixed: check file is empty or not before downloading it; https://github.com/LiuLang/bcloud/issues/92
Merge pull request #3 from LiuLang/master

merge update from LiuLang:master