Make ResourceObject more fool-proof
Fix NPE when heuristic tries to pick up resource already picked up by other robots
fixed positioning bug; collision sensor detects invalid boxes as collideable
Invert the y-axis so the coordinate system is reasonable
added robot mass radius and colour to simconfig and config file
Made quadrant check fails log the failing coordinates
Merge branch 'master' into GP
Rework heuristic sensors (mostly pickup sensors)

* Squashed a lot of bugs but probably introduced some new ones too
* Needs tweaking still
Fixed WheelDriveFromFloat identifier
Merge remote-tracking branch 'origin/master' into GP

Conflicts:
	src/main/java/za/redbridge/simulator/phenotype/heuristics/Heuristic.java