Bug 5917 follow-up: Fix staff client results display

Bug 5917 follow-up: Fix staff client results display

The change to Template::Toolkit broke a number of things on the Staff Client
results display. This patch:
* Fixes the formatting of the results table, which had an unnecessary colspan=2
* Enables the display of the "Edit record" and "Edit items" links
* Corrects the display of item counts, so that labels for "Available,"
  "On loan," and "Unavailable" only appear when appropriate
* Corrects facet links, which were starting new searches rather than limiting
  due to a variable scoping error
* Changes the resort dropdown so that it will show the currently-selected
  sorting

Signed-off-by: Jared Camins-Esakov <jcamins@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>