The Default Default View for a Thing should let me see the references to it

(User Story, Closed -> Fixed, Priority: Critical, Test Status: No automated tests yet , Reported By Justin du Coeur, )

Summary: One of the most common reasons to have to write QL is to write "Things that refer to me" pages. We should obviate that.

Depends Upon:

_refs should include _tagRefs as well

This would check whether the Space contains any Properties that are Restricted To this Thing's Model. If so, we should include a _QLButton to display "Things that use Foo"; if pressed, this runs _refs on this Thing and displays the results.

This display might also include a button to reify the query into a page, a la the Explore page.