User has to jump
When a jump is present, the user has to jump.  I added two new functions in board.py called find_human_jumps and
is_jump_helper which determine help determine if the user has a jump.

Also, I added the panel in gui.py back to the window to allow the user to drag the game window.
Please keep this feature.
Merge branch 'master' of https://github.com/Deitronix/Checkers into Deitronix-master

Conflicts:
	board.py
Merge branch 'master' of https://github.com/Deitronix/Checkers into Deitronix-master