The admin functions are currently not shown in User->setup module.
Affected is for example the 'Display debug messages in a new
browser window' checkbox, that is never shown if an admin is logged in.

This regression was introduced by a wrong refactoring in issue #39164,
the class prefix patch. Looking at the code before and after, the
regression is obvious.

Change-Id: Ic892c830f1ca0cfaccf3e53648d405b35d463377
Releases: 6.0
Related: #39164
Resolves: #39365
Reviewed-on: http://review.typo3.org/13333
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn