Fixes winter coat hood sprite appearing as a bucket.

Removing Smile, Swedish, Chav and Elvis from genetics. These mutation can still be acquired via adminspawned dna injector. Added a dna injector for laser eyes mutation.
Fixes using razor on non human shaving non existent hair.
Fixes chair deconstruction dropping too much metal.
Adding some necessary check for mob buckling in gibber, processor and monkey recycler code, and in ventcrawling proc to fix being able to enter pipe while feeding as a slime.
Fixes snapcorn not giving seeds.
Fixes portable chem dispenser.

code/game/objects/structures/beds_chairs/chair.dm

@@ -4,6 +4,7 @@
 	icon_state = "chair"
 	buckle_lying = 0 //you sit in a chair, not lay
 	burn_state = -1 //Not Burnable
+	buildstackamount = 1
 
 /obj/structure/bed/chair/New()
 	..()
@@ -27,6 +28,7 @@
 		SK.loc = E
 		SK.master = E
 		qdel(src)
+
 /obj/structure/bed/chair/attack_tk(mob/user)
 	if(buckled_mob)
 		..()
@@ -105,6 +107,7 @@
 	color = rgb(255,255,255)
 	burn_state = 0 //Burnable
 	burntime = 30
+	buildstackamount = 2
 	var/image/armrest = null
 
 /obj/structure/bed/chair/comfy/New()