Fixed a small bug with board

I realized that at one point when Im checking for jumps, I accidently
checked for a valid move instead of the jump, so the forwardLeft
direction jump was not acting as it should. Changed it to computer_jump
and it appears to be working as it should.

Also with gui.py I just commented out the section where it is trying to
determine if clicking occurs. I kept clicking on the board and it would
cause my program to crash. We can un-comment it once that has been
fixed.

Is there any way we can get rid of that dialogue box that just started
popping up?
Computer can no longer keep jumping if king

I believe I removed the capability of the computer to continue jumping
if it has just become a king from jumping that turn. I was only able to
test it with one specific sequence and it appeared to work in that case,
but please test with other cases if possible. (I was having trouble
getting the pieces to line up.)
Computer can no longer keep jumping kings

I realized I was making it a bit more complicated then it needed to be,
so I simplified the check to see if the computer turned into a king
during the jump.