Updates grille damages 'Fixes' #796

'Fixes' #796

Decreases unarmed damage to grilles
Increases projectile and item damage to grilles
Makes burn damage deal the same as everything else
Prevents stamina-beams dealing damage to grilles

Values are open to change if anyone has better suggestions for their balance
So i know jack shit about the nitty gritty of how byond processes operators, but in a normal language, the ! here would operate on the Proj,damage_type variable, fliping it, ie making it false, making the expression if (false == stamina). am i wrong?