Bug 9034 [Follow-up] Add sorting and filtering on items table (catalogue/detail.pl)

Bug 9034 [Follow-up] Add sorting and filtering on items table (catalogue/detail.pl)

This follow-up to the original patch offers an alternative method
to handle the width of the table and form fields:

- Reduce the font size of the filter input fields
- Make the filter inputs' width 100% instead of fixed
- Add "'bAutoWidth': false" to the datatables initialization
  to prevent the table width from being set to the browser window
  width on load. This allows the browser to be re-sized and have
  the table re-flow with it.

Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>