Auto Loader Update.

Added auto loaders to compatible tanks.
Fix: Battlefield.unassigned not subtracting when a player types /mt
leave.
Fix: Battlefield.startMatch() clears a spectators inventory and tank
selection.
Code optimization for Battlefield.endMatch().
Add: Battlefield.setInProgress()
Add: New forceend argument for the MineTanks command.
Fixed: Ramming damage is even less of an instant kill.
Fixed: Fall damage is a lot less of an instant kill.
Fixed: DamageHandler.gravityHit() now calls PlayerTankDeathEvent if the
player's health reaches 0.
Fixed: Death messages now display correctly.
Fixed: Name plates now share the same color as their team.