Remove pagesXml(pages, sep).

It’s the same as pagesXml(pages)(sep), and having both
doesn’t seem particularly necessary.
Make ProtoUser compile without bind.

Not the cleanest move to CSS selector transforms, but one
that should work.
Make Crudify compile without bind.

Lot of CSS selector magic throughout, also helped clean up
a lot of NodeSeq=>NodeSeq functions to just return an
appropriate CSS selector transform.