Hydroponics rewrite, details will be in PR. Big commit.

Conflicts:
	baystation12.dme
	code/controllers/master_controller.dm
	code/game/gamemodes/events/spacevines.dm
	code/game/machinery/seed_extractor.dm
	code/modules/mob/living/carbon/brain/posibrain.dm
	code/modules/mob/mob.dm
	code/modules/reagents/Chemistry-Reagents.dm
	code/modules/reagents/reagent_containers/food/snacks/grown.dm
	icons/obj/hydroponics.dmi
	maps/tgstation2.dmm

code/defines/obj/weapon.dm

@@ -548,8 +548,8 @@
 
 /obj/item/weapon/scythe/afterattack(atom/A, mob/user as mob, proximity)
 	if(!proximity) return
-	if(istype(A, /obj/effect/spacevine))
-		for(var/obj/effect/spacevine/B in orange(A,1))
+	if(istype(A, /obj/effect/plantsegment))
+		for(var/obj/effect/plantsegment/B in orange(A,1))
 			if(prob(80))
 				del B
 		del A