Game works!

ConnectLModel.java:
Lines 16-17: trying to draw rows and cols from ConnectLGame (crashes if
not commented out)
Lines 48-56: changed divisions from ttt to ConnectL
Lines 129-140: changed how mouseClicked detects checker placement.
Former code placed checker EXACTLY where click was instead of in first
available spot in the specified column. Also now only updates/repaints
when a valid move is made.