Bug 21070: request.pl details links to biblio instead of moredetail.pl for that item

Bug 21070: request.pl details links to biblio instead of moredetail.pl for that item

This patch alters the hold summary page so that links to records with
item-level holds go to the item detail page instead of the bibliographic
detail page. There is already a link to the bibliographic detail page in
the page heading.

To test, apply the patch and place or locate an item-level hold. In the
list of existing holds for that record, the linked barcode on the
item-level hold should take you to the corresponding item detail page.

Signed-off-by: Lisette <lisettes@latahlibrary.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>