The HUD caused some crashes. I hope its fixed by setting
the osg::Text object to DYNAMIC. This should prevent
an updating of the value in Text for frame n befor
frame n-1 is drawn.
Changed the "map" view to follow the robot.
Did some cleanup after changing the view system.
The last robot controll inputs are now saved for each
frame in a file. And it can be read and used to automate
the robot movement.