Bug 17185: Staff client shows "Lists that include this title:" even if item is not in a list

In the staff client, the text "Lists that include this title:"
is always shown, regardless of whether the item is in a list
or not. This patch fixes that.

Test plan:
1) Log in to staff client.
2) Go to biblio details view:
   /cgi-bin/koha/catalogue/detail.pl?biblionumber=X
   Confirm that "Lists that include this title:" is
   shown even if the item is not in a list.
3) Apply the patch.
4) Repeat step 2. Confirm that the patch works, i.e.
   "Lists that include this title:" is only shown
   for biblios that are actually in a list.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Only applies to non-XSLT view.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>

koha-tmpl/intranet-tmpl/prog/en/modules/catalogue/detail.tt

@@ -538,7 +538,7 @@ function verify_images() {
             </li>
         [% END %]
         <!--This grabs all of the lists a bib record appears in -->
-        [% IF shelves %]
+        [% IF shelves.count %]
             <li><strong>Lists that include this title: </strong>
             <ul>
             [% FOREACH s IN shelves %]