Scoring System Adjustments

[gachia]

Additional Improvements to the Scoring System.

Todos:

Finalize design of Scoring System - what does it accomplish for the player, what is it supposed to show to the player, is it beneficial for the player
Die not due to other player's actions, steal score and distribute to all players
Detect damage done by barrel and use that to calculate score too
Detect object destroy and increment score (mainly for skyhook pillar)
HUD element to show score increments

Bugs:

Some Horizontal/Diagonal Mirrors do not trigger the score increase
Hitting players with protective temporary powerups still grants score (e.g. TempArmor)