Bug 10444 - In advanced search(more), [+] and [-] should behave like links on hover

Bug 10444 - In advanced search(more), [+] and [-] should behave like links on hover

This patch add href="#" to the [+] and [-] links for adding and removing
search terms. It also defines its style so it doesn't show underlined.

To test:
- Browse your OPAC to "Advanced Search" and then "More options".
- The [+] and [-] don't change the cursor on hover
- Apply the patch, reload and see the cursor changes
- Functionality should remain unchanged

Regards
To+

Sponsored-by: Universidad Nacional de Córdoba
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>