Bug 28377: Use the API to suspend/resume holds

Bug 28377: Use the API to suspend/resume holds

This patch makes the patron page (detail and circulation) use the API to
suspend/resume holds on the holds tab.

It previously used the old svc/ scripts we plan to replace.

To test
1. Have a patron with some holds
2. Play with suspending/resuming holds. Include the indefinite
   suspension.
=> SUCCESS: Everything works as usual
3. Apply this patch
4. Repeat 2
=> SUCCESS: Nothing changed, a soft breeze surprises you
5. Sign off :-D

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>