Bug 36096: Add ability to set default sort and length to waitingreserves tables

Bug 36096: Add ability to set default sort and length to waitingreserves tables

To test:
1. APPLY patch and restart services.
2. Have waiting holds, waiting holds past the expiration date, and
   waiting holds with cancellation requests.
3. Go to Administration -> Table settings and find each of the tables. (
   holdscr | holdso | holdst )
4. Each table should now include a 'Default display length:' and
   'Default sort order:'
5. Play with those Table settings, ensuring they behave correctly.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>