alphagov/whitehall — pull request #680 by gma (2013-07-19 15:00:34+00:00)
Title: Fix error messages on nested attachment validation failures

We used to report things like this:

> Supporting page attachments attachment attachment data file can't be blank

Now we say:

> The attached file can't be blank

The need for some (but not all) of this YAML will go away once we drop all these non-polymorphic relationships between documents of different types, and Attachment.