Bug 17821 - due date in intranet search results should use TT date plugin

Bug 17821 - due date in intranet search results should use TT date plugin

Intranet search results displays due date from item onloan.
This should use the TT date plugin.

Test plan :
- set syspref dateformat not on yyyy-mm-dd, for example dd/mm/yyyy
- checkout an item
- at intranet, perform a search where you see the item
=> You must see : "date due : dd/mm/yyyy"

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Mason James <mtj@kohaaloha.com>