Bug 36592: Fix default display lenght and default sort

Bug 36592: Fix default display lenght and default sort

To test:
1. Go to Admin > Table settings
2. Find a table that includes Default display length or Default sort
   order.
3. Try to save a new value.
4. When the page reloads the new values have not been saved.
5. APPLY PATCH
6. Try 1 -3 again, this time the value should save correctly.
7. Go to Admin > Table settings and make sure the accordians still work
   and the in page links in each section still work.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Pedro Amorim <pedro.amorim@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>