Redirect old-style permalinks to new ones.

So old permalinks of the form ?title=Talk:<FlowBoard>&workflow=<topicUUID> work.
In general, if we attempt to load a specific workflow by ID, and
it comes from the wrong title, then redirect to that title.

Bug: 68224
Change-Id: I77e6db76e59cd0a194d8a35e11d753ff8238be3f
Merge "Redirect old-style permalinks to new ones."