alphagov/whitehall — pull request #859 by matthewford (2013-09-17 11:38:00+00:00)
Title: Validations on unpublishing

Discovered validation errors in unpublish did not prevent an edition from being unpublished.

Added validations to prevent circular references, also adds the URI validator.

https://www.pivotaltracker.com/story/show/52623681