[Typo3] TSConfig: change BE usergroup on the fly

[Yomo Guiamo]

----cut-----
> 
> BUT  Mr Bernard Kraft has written an extesnion that allows you to use 
> conditionals in page, user and group tsconfig.  I believe there were a 
> few little problems with it that I found and he fixed but that was ages 
> ago.  The down side is that it wont allow user or group setups to be 
> cached when you log in (if I remember correctly).  Give it a try and see 
> what happens, and there is a good manual for it that explains the 
> extension fairly well.
> 
---- cut-----

I installed the extension and...... I can't login in the BackEnd 
anymore....:-(