Bug 12402: Show patron category on pending patron modifications

Bug 12402: Show patron category on pending patron modifications

To test:
1) Go to OPAC and make a modification to user
2) Go to Staff Client and go to pending patron modifications
3) Notice that we have the user's surname, first name, branch and
   cardnumber
4) Apply patch and refresh page
5) Notice that patron category now shows after user's name

Sponsored-by: Catalyst IT
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit 6c733b2fda7cd94ae2997c1a058d229dd7819692)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>