[TASK] Improve sorting of usergroups in adminpanel

To improve the usability, the usergroups are ordered by title and
the uid is added at the end to allow working with the keyboard.

Resolves: #17290
Releases: master, 6.2
Change-Id: Ie855a73e81a8b66265d4b94567db088f0991fd5d
Reviewed-on: http://review.typo3.org/35441
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>