Added Merge Quiz functionality, which merges two quizzes into one. I didn't really need this functionality but wanted practice in adding features to an existing entity without modifying the existing classes. w00t
Used a tranaction to wrap the changes to the three models being done within the PORO QuizMerge
Minor GUI changes
Minor changes, including moving sort from QuizMerge to a view helper, changing a validation error to appear on the target instead of the source, and changes to increase code readability.