More small cleanup changes.
Add images of the two errors that occur.

Still can't figure out the cause of this.
When I press the buttons in a random order
(sometimes I have to press a lot, sometimes not)
either pressing Load Sample after Boss Mode
causes error 1, or clearing and pressing Boss Mode
causes error 2. After refreshing and trying to
repeat the same button clicks I can't get the
same result. Maybe I'm just tired XD
I'm something is screwing up the array which
stores the contents of the grid.