Implement Bay's SSmachinery and power usage updates, further unclogging the toilet (#13910)

code/modules/reagents/Chemistry-Machinery.dm

@@ -11,7 +11,7 @@
 	anchored = 1
 	icon = 'icons/obj/chemical.dmi'
 	icon_state = "mixer0"
-	use_power = 1
+	use_power = POWER_USE_IDLE
 	idle_power_usage = 20
 	layer = 2.9
 	clicksound = /decl/sound_category/button_sound
@@ -317,7 +317,7 @@
 	layer = 2.9
 	density = 0
 	anchored = 0
-	use_power = 1
+	use_power = POWER_USE_IDLE
 	idle_power_usage = 5
 	active_power_usage = 100
 	var/inuse = 0

code/modules/reagents/dispenser/dispenser2.dm

@@ -19,7 +19,6 @@
 	var/list/forbidden_containers = list(/obj/item/reagent_containers/glass/bucket) //For containers we don't want people to shove into the chem machine. Like big-ass buckets.
 	var/list/drink_accepted = list(/obj/item/reagent_containers/food/drinks, /obj/item/reagent_containers/food/condiment) //Allow these cans/glasses/condiment bottles but forbid ACTUAL food. 
 
-	use_power = 1
 	idle_power_usage = 100
 	density = 1
 	anchored = 1