Bug 32969: Remove references to jQueryUI assets and style in the OPAC

Bug 32969: Remove references to jQueryUI assets and style in the OPAC

This patch removes the jQueryUI assets from Bootstrap OPAC files and
removes the links to those assets from the templates. References in CSS
to jQueryUI-related elements are also removed.

To test, apply the patch and rebuild the OPAC CSS.

Test various pages in the OPAC to confirm that there are no visible
changes. The browser console should not warn of missing files.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>