Changed number of tunnels for testing if color changes still occur after removing one tunnel from the gameboard.
Changed config file for arena.
Adapted call to teleport method to suit move of teleport() from data package to control package.
Moved method teleport() from Arena iin data package to RobotzControl in control package. Applied minor changes in parameter handling.
Removed unneccessary Javadoc (method comments already in interface). Changed various visibility modifies of methods.

Also removed method teleport() from Arena in data package (moved to
control package instead).
Updated Javadoc.
Minor stuff.
Didn't do nuffin, really...
Renamed method checkPosition() for target setting to prevent confusions with checkPosition() for MobileItem objects.

Also modified check parameters slightly for better results.
Refactored method collides and added some methods for checking overlapping of items.
refactored checkPosition. Looks better now.