Fixed ValueError to AuthCanceled and AuthFailed
Merge pull request #10 from syabro/patch-3

Fixed ValueError to AuthCanceled and AuthFailed
Access to user username with check for USERNAME_FIELD. Refs #657
Merge branch 'master' of git://github.com/omab/django-social-auth
Merge branch 'master' of git://github.com/krvss/django-social-auth