Bug 36946: Fix cud- error when processing offline circulations

Bug 36946: Fix cud- error when processing offline circulations

This patch fixes a CSRF token error when processing offline
circulations. The form needed both the token parameter and to be sent as
POST.

To test, apply the patch and go to Circulation.

- Go to Upload offline circulation file (.koc)
- Upload a .koc file, add to offline circulation queue.
- View pending offline circulation actions.
- Check one or more transactions and click "Process" at the bottom of
  the page.
  - The process should complete without any JS errors, and the
    checkboxes should be replaced with the text "Success."
- Perform the same test with the "Delete" button.

Sponsored-By: Athens County Public Libraries
Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>