Convert FailureNotificationResource to DRF (bug 910602)
Convert PreparePayResource to DRF (bug 910609)
Convert StatusPayResource to DRF (bug 910612)
Merge pull request #1437 from diox/convert-failurenotificationresource-to-drf

Convert FailureNotificationResource, StatusPayResource and PreparePayResource to DRF (bug 910602, bug 910612 and bug 910609)