Bug 20221: Fix for JavaScript error during checkout patron search

Bug 20221: Fix for JavaScript error during checkout patron search

This patch fixes a bug caused by the changes in Bug 19641. JavaScript
embedded in circ-patron-search-results.inc executes before jQuery is
loaded.

This patch adds a separate javascript file which can be included both in
circulation.tt and request.tt since both use the same include.

To test, apply the patch and submit a patron name in the check out form.
On the page of search results, clicking a table row should work the same
as clicking the patron name link.

Perform the same test during the hold process: Locate and place a hold
on a title. In the patron search form, submit a patron name and test the
behavior of the search results screen.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>