Bug 26799: Remove the use of jquery.checkboxes plugin from patron payment page

Bug 26799: Remove the use of jquery.checkboxes plugin from patron payment page

This patch removes the use of the jquery.checkboxes plugin from the
patron payment screen (members/pay.tt).

To test, apply the patch and locate a patron with unpaid fines.

- View the "Accounting" page for that patron.
- In the table of outstanding fines, test the "Select all" and "Clear
  all" links work correctly to check the checkboxes corresponding to
  each fine.
- Confirm that the "Select all" action enables the "Pay selected" and
  "Write off selected" buttons.
- Confirm that the "Clear all" action disables the "Pay selected" and
  "Write off selected" buttons.

Signed-off-by: Lisette Scheer <lisettes@latahlibrary.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>