new banner image
chnage on banner image and altering the centralized text to a link with the right position
translation to banner button text
create google analytics custom var to reference links
Merge pull request #456 from pedromarins/3years-banner

translation to banner button text
Merge branch 'master' of github.com:catarse/catarse
added basic validations and specs
changed create_with_omniauth method to create_from_hash which is a simpler method
created methods to find authorization from oauth hash and to create a new authorization based on the same hash
rewrote omniauth callback controller to use new methods from authorization
Merge pull request #457 from diogob/refacto_user

Refacto user