avatar url fix

there is no 'picture' property anymore. Using 'photo_big_url' or 'photo_medium_url' instead.
last and firt name fix
Missing and broken russian translations
hubic.com oauth2 provider
added hubic to the list of providers in README
README edited
added redirect to https protocol required by hubic
Merge pull request #595 from mskarbek/master

hubic.com provider
Merge pull request #593 from byashimov/patch-1

Missing and broken russian translations
Merge pull request #586 from sourenaraya/patch-1

[vk.com provider] avatar url fix, name fix
Hooking up Hubic to travis
Make email fields be type email for friendlier mobile experiences.
Merge pull request #600 from grue/html5-email-field-types

Make email fields be type email for friendlier mobile experiences.
Added Xing support
Updated ChangeLog, AUTHORS ...
Adding portuguese translation
Merge pull request #602 from mpomarole/patch-1

Adding portuguese translation
Merge pull request #592 from davidfischer-ch/master

Use get_user_model from django.contrib.auth to fix a deprecation
Update README.rst
Fixed keyerror for missing password in AuthenticationBackend