Merge pull request #303 from arctelix/penner-master

signup email initial = account_verified_email
KeyError: 'socialaccount_state' (closes #305)
Add auto-generated language-file for Swedish
Add Swedish translations, including the compiled file.
Merge pull request #306 from dakrer/swedish

Add Swedish translation
SOCIALACCOUNT_EMAIL_VERIFICATION='none' was not always respected, fixed (closes #284)
Only updating refresh token (for oauth2) if it was sent.
Merge pull request #308 from LeadSift/master

OAuth2 Systems like Google do not resend refresh_token on every login
Stop sending emails on every login when email_verification is optional (closes #310)
Welcome e-mail not working properly for social accounts (closes #296)
ADDED PT BR TRANSLATION
Merge pull request #311 from rvnovaes/master

Added PT_BR translation
Added support for re-authentication (closes #293, closes #166, closes #42)
Giving proper credit
Cleanup, using constants
Cleanup, using constants
Released 0.12.0
Opening up dev
Python3 incompatibility: basestring (closes #313, closes #314)
finished Croatian translation, corrected some typos