Bug 14790 - Add Opac view link to search results

Bug 14790 - Add Opac view link to search results

Test Plan:
1) Apply this patch
2) Perform a staff catalog search
3) Note the new "OPAC view" link
4) Click the link, it should open a new tab to the OPAC details for that
   record.

This works fine except that it doesn't open in a new tab. I don't think
it's the fault of the patch, but of browser.js messing with links again
(See Bug 11937).

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>