Bug 10774: Allow individual holds to be suspended and resumed from the OPAC

Bug 10774: Allow individual holds to be suspended and resumed from the OPAC

Right now, holds can only be suspended and resumed from the OPAC as a
whole. It would be nice to be able to suspend and resume holds on a hold
by hold basis from the OPAC.

Test Plan:
1) Apply this patch
2) Log in to the OPAC
3) Place a number of holds
4) Browse to "my summary" and select the holds tab
5) From here, test the following actions
   a) Suspend a hold indefinitely ( no resume date )
   b) Suspend a hold with a date to automatically resume
   c) Manually resume a suspended hold
6) Disable AutoResumeSuspendedHolds, ensure the suspend until date field
   is no longer visible.
7) Disable SuspendHoldsOpac, ensure all suspension related fields are
   no longer visible.

Signed-off-by: Chris Rohde <crohde@roseville.ca.us>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>