Removes click cooldowns almost everywhere.

Still have: doors, windoors, cameras, windows, grilles, blobs, resisting, alien stuff, mechas, spray bottles.
Setting changeNextMove is now responsibility of the item being attacked.
Adds a config option to eliminate click cooldowns completely. Intended to be used by devs.

code/game/objects/items.dm

@@ -159,7 +159,6 @@
 	else
 		if(isliving(src.loc))
 			return
-		user.next_move = max(user.next_move+2,world.time + 2)
 	user.put_in_active_hand(src)
 	if(src.loc == user)
 		src.pickup(user)