Don't dock Elo points if the player won.

Don't dock Elo points if the player won.

After much debate I've included this enhancement. It prevents
losing Elo points if you've won the game. While this makes the
algorithm not *true* Elo, it prevents the negative perception
in the community. People were turning off their tracking for
fear of losing Elo points even if they won, and this hopefully
will fix that situation.