New fixtures: Starway AXIS 250 16Bits, FullKolor, NanoKolor, TourKolor, Servo Beam 5R (thanks to Thierry Rodolfo)
Fixtures: updated Stage Tech LeaderScan Roto definition
New fixture: Contest PSC-930 (thanks to Noel Utter)
Fix simpledesk crash
New: Inverted appearance for Knobs
Inverted appearance for Knob: simplify code