Bug 10026 - OPAC cart not showing location anymore

Bug 10026 - OPAC cart not showing location anymore

When Bug 7570 added availability information to the cart it switched
which subroutine was used to get item information, and thus changed how
the information was being returned.

This patch makes accommodations for this change by adding processing of
item location information to the script in a way that will match the
existing template variables.

To test, add items to the cart in the OPAC some of which include
shelving location information. When you view the cart you should see the
shelving location displayed.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
(cherry picked from commit 9186c2fedacfa1d0063fc67ec1e1e1a923abdcf6)

Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>