[Ready Again]Refactors disabilities into lists, allowing for independent disability sources

code/game/objects/items/tools/screwdriver.dm

@@ -75,7 +75,7 @@
 		return ..()
 	if(user.zone_selected != "eyes" && user.zone_selected != "head")
 		return ..()
-	if(user.disabilities & CLUMSY && prob(50))
+	if(user.has_disability(CLUMSY) && prob(50))
 		M = user
 	return eyestab(M,user)
 
@@ -105,7 +105,7 @@
 	item_state = "drill"
 	lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
-	materials = list(MAT_METAL=150,MAT_SILVER=50,MAT_TITANIUM=25)
+	materials = list(MAT_METAL=150,MAT_SILVER=50,MAT_TITANIUM=25) //done for balance reasons, making them high value for research, but harder to get
 	force = 8 //might or might not be too high, subject to change
 	w_class = WEIGHT_CLASS_SMALL
 	throwforce = 8