[TASK] Sort BE usergroup records in module "Backend Users"

Add a default ordering for the backend usergroup records
which makes it easier to find a specific group.

Change-Id: I99f490193ca8b070c0d71a3a422bbc4ca4a3f3c6
Resolves: #61686
Releases: master, 6.2
Reviewed-on: http://review.typo3.org/33300
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>