Bug 15605 - Accessibility: Can't tab to add link in serials routing list add user...

Bug 15605 - Accessibility: Can't tab to add link in serials routing list add user popup

To Test -
1. Go to Serials and search for a title and then click on it.
2. Click routing list and then Add recipients.
3. Search for a patron.
4. Using the tab key try to navigate onto the Add link.
5. Notice it skips Add.
6. Apply the patch and then repeat steps 1-4, notice the Add link can now be accessed through using the keyboard.

Followed test plan, works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit c76549dd7b4a090844a5a51664409417f9838923)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>