Added ability for mechanical turk to build an arc if it can
Now the AI can build both campuses and arcs, fixed the retrain so if required number is 0, it doesn't retrain
Fixed mechanical turk B so that retraining for ARCs works, added ability for B to build GO8 campuses, created alternate version of playGame which runs the game thousands of times and returns the number of times each player won and the average number of moves made across all games.