Bug 23455: Patron card printing from Patron lists is broken

Bug 23455: Patron card printing from Patron lists is broken

This patch makes a few corrections to the process of printing patron
cards from the patron lists page. These changes are necessitated by Bug
20650: Changes to the markup in patroncards/print.tt were not reflected
in the JavaScript in patron_lists/lists.tt.

Also fixed: A missing quotation mark, a missing semicolon, and
incorrect template variable filter.

To test, apply the patch and go to Tools -> Patron lists.

 - Click the "Actions" menu corresponding to a patron list.
 - Select "Print patron cards."
 - In the "Print patron cards" modal, click the "Export" button.
 - The modal should reload with a link to download a patron card PDF.
   The link should work correctly.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>