Target updates GUI with victory.

winState variable added to HUD. targetSoundController (which is now just
used to control the target at all) accesses HUD and sets winState to
true upon collision of boat and target.
Target Plays Sound and Updates GUI properly.
Target Hidden
Splash ParticleSystem created.
HUD displays some controls
cherrywood oars
2 players, movement fixes, cannonball fixes

cannonballs explode on water, players no longer clip through boat