Page Header doesn't work right with unreified Tags
Summary:
From Eric's email, 2/8/16:
I'm trying to customize the Page Header for unreified tags.
Setting the "Page Header" property for the Model used to Restrict the tag-set property seems to do the trick...
...but I can't figure out how to display the actual name of the (unreified) tag in the overridden header. None of [[Name]], [[Computed Name]], nor [[Link Name]] do it. (I get blank, blank, and "Page contents" respectively.)
What should work is simply saying ____ -- but in fact, that doesn't work at all. So let's fix that...
