added backer decorator to remove some logic and some helpers from the backer class
Merge branch 'master' of github.com:catarse/catarse into refactor_backer_model
removing unnecessary methods, specs and view used to update the email from old user base
added some sleeps trying to fix feature specs
Merge pull request #314 from diogob/refactor_backer_model

Refactor backer model
generated new grid SASS and adjusted settings to use 1064px fixed size grid with 12 columns. Still need to adjust the pages using catarse_bootstrap.
Merge branch 'master' of github.com:catarse/catarse into move_catarse_bootstrap_to_12_columns
move send_credits_notification to user model
Merge pull request #316 from adrianob/refactor_backer_model

move send_credits_notification to user model
Merge branch 'master' of github.com:catarse/catarse into move_catarse_bootstrap_to_12_columns
updated all catarse_bootstrap views to use new 12 column grid.
removed unused variable default_grid_column_count
Merge pull request #317 from diogob/move_catarse_bootstrap_to_12_columns

Move catarse bootstrap to 12 columns
Merge pull request #315 from diogob/remove_obsolete_email_update_from_users

removing unnecessary methods, specs and view used to update the email fr...