Bug 18077: Batch item modification link is bold when batch item deletion is active...

Bug 18077: Batch item modification link is bold when batch item deletion is active in tools menu

To test:
1) Go to Tools -> Batch item deletion
2) Notice the link for Batch item MODIFICATION is bold, not the deletion
link
3) Apply patch and refresh page
4) Correct link should now be bold.
5) Go to batch item modification and confirm the correct link is bold

Sponsored-by: Catalyst IT
Followed test plan, works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Re-tested, 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: Kyle M Hall <kyle@bywatersolutions.com>