create project and backer scope to get backers and projects that have confirmed backer on current day
change the project owner new backer confirmed notification to send one time per day when have a new confirmed backer [Fix #60979604]
fix typo error
Merge pull request #461 from devton/fix_some_notification_bugs

fix typo error
Upgraded rails and paper trail. Added option in reward spec to test the if the papertrail funcionality is properly set.
Merge branch 'master' of github.com:catarse/catarse into cleaning_and_updating_gemfile
use notify_once with date filter
Merge pull request #463 from diogob/cleaning_and_updating_gemfile

Updating Rails and Paper Trail
use projects created_at to avoid ambigous created_at from backers
use s3.amazonaws.com host
update translations [Fix #61401934]
fixing_ability_and_user_id_attribute_in_backer
Merge branch 'master' of github.com:catarse/catarse
Merge pull request #460 from devton/confirmed_backers_info

Change project owner confirmed backer notification to send one time per day with confirmed backers resume ;)
fix video thumbnail in case the user deletes the video
use endpoint
Merge branch 'master' of github.com:catarse/catarse
Merge pull request #464 from diogob/fixing_ability_and_user_id_attribute_in_backer

fixing_ability_and_user_id_attribute_in_backer
Merge pull request #465 from adrianob/fix_404_thumbs

fix video thumbnail in case the user deletes the video
changed session key to use secret token from the database