Implemented a simple supervisor controller that moves a light source around at specified intervals

 Changes to be committed:
	new file:   src/Webots/Homeo-experiments/controllers/lightMover/lightMover.py
	modified:   src/Webots/Homeo-experiments/worlds/khepera-braitenberg-1-1-HOMEO.wbt
	modified:   src/Webots/Homeo-experiments/worlds/khepera-braitenberg-2-HOMEO.wbt