Replace RSpec features with Cucumber features
Fix a lot of random stuff
Improve locale organization
Delete return_to when redirecting
Simplify Login
Fix a cucumber step
Move deleting account to RegistrationsController
Fix some validations
Find a cool way how to speed up models specs
Fix some specs and remove the old specs
Bring back UserAuthenticator
Bring back question and game specs
Fix questions
Fix some minor things
Update questions and move authentication into an engine