fix project posts subscriptions
added specs and new template on contribution.notification_template_for_failed_project
notification for contributor when project fails and contribution is made via credits
notify backfire when contribution is made via credits when project fails
Merge pull request #1012 from devton/features/add-notification-for-credit-contributions

Features/add notification for credit contributions
added bank account validation on pagarme
Merge pull request #1008 from adrianob/fix_unsubscribes

fix project posts subscriptions
Merge pull request #1013 from devton/features/bank-account-pagarme-validation

added bank account validation on pagarme
fixing contribution report for project owner
update pagarme
Merge branch 'master' of heroku.com:catarse-cedar
adds trcking code to home page
Merge pull request #1014 from diogob/track_home_visits

adds trcking code to home page