rendition support in dexter

[Hein-Jan Leliveld <h.j.leliveld@student.tudelft.nl>]

Hello,
 
In the latest phase2 debs (v20) it isn't possible to choose a rendition
x-server in dexter. If I manually edit the XF86Config-4 file to add the
rendition video card everything works fine.

Greetings,

Hein-Jan Leliveld