Bug 34865: Use OPACURLOpenInNewWindow for library URLs

Bug 34865: Use OPACURLOpenInNewWindow for library URLs

If a library has a URL defined it is shown in the OPAC under the
libraries page. This patch updates the template so that the link
respects the OPACURLOpenInNewWindow system preference.

To test, apply the patch and go to Administration -> Libraries and edit
a library if necessary so that it has a URL defined.

In the OPAC, go to the Libraries page. Test that the library link
respects whichever setting you have for OPACURLOpenInNewWindow

Signed-off-by: Kelly McElligott <kelly@bywatersolutions.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>