Bug 28442: Sort by lastname for array type roles

Bug 28442: Sort by lastname for array type roles

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit ac00d757ab3e30cd4db2fb9694d28847d009a218)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
(cherry picked from commit 41b78b68c1406a3cf3433d79036cb9b0fd28360b)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
(cherry picked from commit 8d6b7d3938b53c4e205763cbacf6ccc81878f995)
Signed-off-by: Wainui Witika-Park <wainuiwitikapark@catalyst.net.nz>
(cherry picked from commit 8d6b7d3938b53c4e205763cbacf6ccc81878f995)