RnD & Cat fixes (#1913)

changes:

bugfix: "Fixed an issue where some objects could not be deconstructed with RnD."
bugfix: "Helmet lights now actually display the powered-on sprite."
bugfix: "Cats on heads no longer magically turn invisible."
bugfix: "Cyborgs' portable destructive analyzer can no longer steal intercoms or the captain's safe."
imageadd: "Duffle (duffel?) bags now have in-hand sprites."
Fixes #1158 
Fixes #1662

code/modules/materials/materials.dm

@@ -466,7 +466,7 @@ var/list/name_to_material
 	tableslam_noise = 'sound/effects/Glasshit.ogg'
 	hardness = 40
 	weight = 30
-	stack_origin_tech = "materials=2"
+	stack_origin_tech = list(TECH_MATERIAL = 2)
 	composite_material = list(DEFAULT_WALL_MATERIAL = 1875,"glass" = 3750)
 	window_options = list("One Direction" = 1, "Full Window" = 4, "Windoor" = 5)
 	created_window = /obj/structure/window/reinforced

code/modules/mob/holder.dm

@@ -355,19 +355,17 @@ var/list/holder_mob_icon_cache = list()
 	desc_dead = "It used to be a little plant critter."
 	icon_state = "nymph"
 	icon_state_dead = "nymph_dead"
-	origin_tech = "magnets=3;biotech=5"
+	origin_tech = list(TECH_MAGNET = 3, TECH_BIO = 5)
 	slot_flags = SLOT_HEAD | SLOT_OCLOTHING
 	w_class = 2
 
 
-
-
 /obj/item/weapon/holder/drone
 	name = "maintenance drone"
 	desc = "It's a small maintenance robot."
 	icon_state = "drone"
 	item_state = "drone"
-	origin_tech = "magnets=3;engineering=5"
+	origin_tech = list(TECH_MAGNET = 3, TECH_ENGINEERING = 5)
 	slot_flags = SLOT_HEAD
 	w_class = 4
 	contained_sprite = 1
@@ -410,7 +408,7 @@ var/list/holder_mob_icon_cache = list()
 	name = "cortical borer"
 	desc = "It's a slimy brain slug. Gross."
 	icon_state = "brainslug"
-	origin_tech = "biotech=6"
+	origin_tech = list(TECH_BIO = 6)
 	w_class = 1
 
 /obj/item/weapon/holder/monkey
@@ -457,7 +455,7 @@ var/list/holder_mob_icon_cache = list()
 	icon_state_dead = "mouse_brown_dead"
 	slot_flags = SLOT_EARS
 	contained_sprite = 1
-	origin_tech = "biotech=2"
+	origin_tech = list(TECH_BIO = 2)
 	w_class = 1
 
 /obj/item/weapon/holder/mouse/white

code/modules/mob/living/carbon/human/update_icons.dm

@@ -779,8 +779,9 @@ var/global/list/damage_icon_parts = list()
 
 		if(istype(head,/obj/item/clothing/head))
 			var/obj/item/clothing/head/hat = head
-			if(hat.on && light_overlay_cache["[hat.light_overlay]"])
-				standing.overlays |= light_overlay_cache["[hat.light_overlay]"]
+			var/cache_key = "[hat.light_overlay]_[species.get_bodytype()]"
+			if(hat.on && light_overlay_cache["[cache_key]"])
+				standing.overlays |= light_overlay_cache["[cache_key]"]
 
 		standing.color = head.color
 		overlays_standing[HEAD_LAYER] = standing

code/modules/mob/living/silicon/robot/robot_items.dm

@@ -90,7 +90,10 @@
 			user << "Your [src] already has something inside.  Analyze or eject it first."
 			return
 		var/obj/item/I = target
-		I.loc = src
+		if (I.anchored)
+			user << span("notice", "\The [I] is anchored in place.")
+			return
+		I.forceMove(src)
 		loaded_item = I
 		for(var/mob/M in viewers())
 			M.show_message(text("<span class='notice'>[user] adds the [I] to the [src].</span>"), 1)

code/modules/paperwork/pen.dm

@@ -111,7 +111,7 @@
  * Parapens
  */
 /obj/item/weapon/pen/reagent/paralysis
-	origin_tech = "materials=2;syndicate=5"
+	origin_tech = list(TECH_MATERIAL = 2, TECH_ILLEGAL = 5)
 
 /obj/item/weapon/pen/reagent/paralysis/New()
 	..()

code/modules/projectiles/guns/energy/special.dm

@@ -373,7 +373,7 @@
 	icon = 'icons/obj/vaurca_items.dmi'
 	icon_state = "thermaldrill"
 	item_state = "thermaldrill"
-	origin_tech = "combat=6;phorontech=8,"
+	origin_tech = list(TECH_COMBAT = 6, TECH_PHORON = 8)
 	fire_sound = 'sound/magic/lightningbolt.ogg'
 	slot_flags = SLOT_BACK
 	w_class = 4

code/modules/projectiles/guns/projectile/pistol.dm

@@ -77,7 +77,7 @@
 	magazine_type = /obj/item/ammo_magazine/t40
 	allowed_magazines = list(/obj/item/ammo_magazine/t40)
 	caliber = "10mm"
-	origin_tech = "combat=3;materials=2"
+	origin_tech = list(TECH_COMBAT = 3, TECH_MATERIAL = 2)
 	fire_sound = 'sound/weapons/Gunshot_light.ogg'
 	load_method = MAGAZINE
 	sel_mode = 1

code/modules/telesci/bscrystal.dm

@@ -6,7 +6,7 @@
 	icon = 'icons/obj/telescience.dmi'
 	icon_state = "bluespace_crystal"
 	w_class = 1
-	origin_tech = "bluespace=4;materials=3"
+	origin_tech = list(TECH_BLUESPACE = 4, TECH_MATERIAL = 3)
 	var/blink_range = 8 // The teleport range when crushed/thrown at someone.
 
 
@@ -42,5 +42,5 @@
 /obj/item/bluespace_crystal/artificial
 	name = "artificial bluespace crystal"
 	desc = "An artificially made bluespace crystal, it looks delicate."
-	origin_tech = "bluespace=2"
+	origin_tech = list(TECH_BLUESPACE = 2)
 	blink_range = 4 // Not as good as the organic stuff!

code/modules/telesci/gps.dm

@@ -6,7 +6,7 @@ var/list/GPS_list = list()
 	icon_state = "gps-c"
 	w_class = 2
 	slot_flags = SLOT_BELT
-	origin_tech = "programming=2;engineering=2"
+	origin_tech = list(TECH_DATA = 2, TECH_ENGINEERING = 2)
 	var/gpstag = "COM0"
 	var/emped = 0
 	var/turf/locked_location

code/modules/telesci/telepad.dm

@@ -94,7 +94,7 @@
 	icon = 'icons/obj/radio.dmi'
 	icon_state = "beacon"
 	item_state = "signaler"
-	origin_tech = "bluespace=3"
+	origin_tech = list(TECH_BLUESPACE = 3)
 
 /obj/item/device/telepad_beacon/attack_self(mob/user)
 	if(user)