initialize facebook network
partial implementation for fb sing in
added facebook login
add login with ckontakte
add login with linked in
fix redict to default page with each page refresh
small improvments in sing up template
Merge branch 'master' into feature/social_network_auth
add test for social networks
Merge branch 'master' into feature/social_network_auth
remove emails, from social networks auth
create link social network tab in settings, make avaivable only login via social networks
add social networks to settingns
add link functionality
add acceptance settings tests for social networks
add test for social network login
Add authorization model test, remove trailing spaces
Try to fix random fail
last attempt to fix auth tests
Add validation tests to auth model spec