remove unnecessary validation #changelog [Fix #45148339]
announcement for new login system #changelog [Fix #45709727]

need to show a announcement for the user showing a link for redirect
user to a blog post about the new login system.
Merge branch 'production' of github.com:catarse/catarse into production
updated payment engine gems\n we needed to change the redirect to backer show after success
added class method do create callbacks for distinct providers #changelog
to enable different providers based on the oauth_providers table
added twitter back to the login page
for we need to enable old twitter users to updated their emails
change project thumbnail size for facebook compatibility #changelog [Fix #45845141]
use full url for og:image since facebook requires it
undo changes in project decorator, as it would break production environment :p
changed set_email route
we needed a simpler route for the email change monday
Merge branch 'master' of github.com:catarse/catarse
update catarse_mailchimp repository

because the owner is catarse ;)
Project owner can see the user name on backers report #changelog [Fix #45833443]

Now project owner can see the name of the user that backed your project
:)
fix conflicts
updated uservoice widget to latest version #changelog
solve conflicts
Merge branch 'master' of github.com:catarse/catarse
Tweaked a little bit the reset password text
I wanted something more friendly to users that have never defined a
password before (to migrate everybody to devise)
removed duplicated code in ability
removed duplicated code in project successful/unsuccessful notification conditional
added some missing translations