deleted unneeded world graph layers
Included affordances in motion. Motion is randomic.
Trim some unneded files.

Reorganized the virtualRobot framwework:
	- it now mantains only one world and has several views
	- it avoids the rotatation to get panoramicas (still in progress)
	- lowered the number of classes
	- took out as much simulation code as I could from there.