wizard cleaning

More classes in wizard for importing from repo
Merging changes from Marquette team's update.
Changes to Behavior.java in gamespecification based on feedback from the professor. TransitionBehaviorType has been eliminated and enumerated values rolled into BehaviorType. Fixed some bugs related to changes in the number of items now in a QuizChallenge. If you find a typing error from calls to QuizChallenge.setItem(item), change it to QuizChallenge.getItem().add(item).