Bug 13119 - Use XSLT to display tagged titles in the OPAC

Bug 13119 - Use XSLT to display tagged titles in the OPAC

This patch updates the display of a logged-in user's tagged titles to
use the same XSLT stylesheet used by search results and Lists. This
would make for a more consistent display of information.

Unrelated change: Corrected "My tags" header to read "Your tags,"
consistent with sidebar navigation.

To test you should have multiple titles in your catalog which you have
tagged in the OPAC.

- Set the OPACXSLTResultsDisplay system preference to 'default'
- Log in to the OPAC and view the "your tags" page.
- Confirm that title information is displayed correctly. Compare to
  search results.
- Empty the OPACXSLTResultsDisplay system preference and reload the
  "your tags" page. The display should revert to the old view, showing
  title, subtitle (if any) and author (if any).
- Set the OPACXSLTResultsDisplay to a custom path pointing to a custom
  XSL file and confirm that the list of your tagged titles changes
  accordingly.

Note: A follow-up will add "action" links ("place hold," "add to cart,"
etc) consistent with other pages.

Signed-off-by: Frederic Demians <f.demians@tamil.fr>
Works as described. opac-tag.pl page displays tagged titles the same way as
result & list pages.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>