Bug 13587: Fix Authorised Values Toolbar

Bug 13587: Fix Authorised Values Toolbar

To test:
1. Go to Home > Administration > Authorised Values
2. Notice no plus icons are appearing infront "New Authorised Value..." and "New Category" in the toolbar.
3. Apply the patch.
4. Check that the plus icons infront of "New Authorised Value..." and "New Category" in the toolbar are appearing as they should.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Nice addition! I added spaces to match the formatting on the other pages a bit more closely.

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