Bug 12568 - Improve visibility of successful renewal via opac

Bug 12568 - Improve visibility of successful renewal via opac

Currently, when a patron renews an item via the opac, the only feedback
the patron receives when a renewal is successful is an updated value for
the due date of the item. This subtle indication of success may go
unnoticed by some patrons. We should add a more prominent way to
indicate an item was renewed successfully.

Test Plan:
1) Apply this patch
2) From the OPAC, renew some items
3) Note the "Renewed!" message in the "Renew" column of the checkouts table

Signed-off-by: Cathi Wiggins <cwiggins@ci.arcadia.ca.us>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes tests and QA script.
Makes successful renewals more visible to the user in the OPAC.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>