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
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
solve conflicts
Merge branch 'master' of github.com:catarse/catarse