When I pushed these changes, I had made a couple last-minute changes that

didn't end up completely committed to git, which meant that things were in a

relatively broken state. This change fixes two issues with file attachment

histories.
First, the attribute name when creating new file attachments had changed from

attachment_history_id to attachment_history. This was reflected in most

places but a couple didn't get the update.
Second, newly-created FileAttachmentHistory objects weren't being properly

associated with the right review request, which meant that future updates would

be rejected.

Created some new file attachments and then updated them.
Ran unit tests