Limit dispenser importing to specific jobs

* Limit dispenser importing to specific jobs

This change is designed to encourage people playing specific jobs to set up their dispensers how they like, and slow down other people who may try to do that job from under them by requiring them to do it manually. Therefore chemists and bartenders can import a list of recipes into their respective dispensers, but a medical doctor can't rush in and immediately print their favourite 7 bottles before the chemist even walks in the door.

* Fix nulls

code/modules/casino/premium_dispenser.dm

@@ -10,6 +10,7 @@
 	ui_title = "Premium Drink Dispensary"
 	accept_drinking = 1
 	var/max_cartridges = 90
+	import_job = null
 
 /obj/machinery/chemical_dispenser/premium/full
 	spawn_cartridges = list(

code/modules/reagents/machinery/dispenser/dispenser2.dm

@@ -25,6 +25,7 @@
 	var/list/recording_recipe
 	/// Saves all the recipes recorded by the machine
 	var/list/saved_recipes = list()
+	var/import_job = JOB_CHEMIST
 
 /obj/machinery/chemical_dispenser/Initialize(mapload)
 	. = ..()
@@ -203,6 +204,9 @@
 			. = TRUE
 
 		if("import_config")
+			if(import_job && (ui.user.mind.assigned_role != import_job))
+				to_chat(ui.user, span_warning("This option is only available to the job: [import_job]"))
+				return FALSE
 			var/list/our_data = params["config"]
 			if(!islist(our_data))
 				return FALSE

code/modules/reagents/machinery/dispenser/dispenser_presets.dm

@@ -64,6 +64,7 @@
 	icon_state = "soda_dispenser"
 	ui_title = "Soda Dispenser"
 	accept_drinking = 1
+	import_job = JOB_BARTENDER
 
 /obj/machinery/chemical_dispenser/bar_soft/full
 	spawn_cartridges = list(
@@ -95,6 +96,7 @@
 	icon_state = "booze_dispenser"
 	ui_title = "Booze Dispenser"
 	accept_drinking = 1
+	import_job = JOB_BARTENDER
 
 /obj/machinery/chemical_dispenser/bar_alc/full
 	spawn_cartridges = list(
@@ -127,6 +129,7 @@
 	icon_state = "coffee_dispenser"
 	ui_title = "Coffee Dispenser"
 	accept_drinking = 1
+	import_job = JOB_BARTENDER
 
 /obj/machinery/chemical_dispenser/bar_coffee/full
 	spawn_cartridges = list(

code/modules/reagents/machinery/dispenser/dispenser_presets_vr.dm

@@ -4,6 +4,7 @@
 	dispense_reagents = list(
 		REAGENT_ID_WATER, REAGENT_ID_SUGAR, REAGENT_ID_ETHANOL, REAGENT_ID_RADIUM, REAGENT_ID_AMMONIA, REAGENT_ID_DIETHYLAMINE, REAGENT_ID_PLANTBGONE, REAGENT_ID_MUTAGEN, REAGENT_ID_CALCIUM
 		)
+	import_job = JOB_XENOBOTANIST
 
 /obj/machinery/chemical_dispenser/xenoflora/full
 	spawn_cartridges = list(
@@ -24,6 +25,7 @@
 	dispense_reagents = list(
 		REAGENT_ID_NUTRIMENT, REAGENT_ID_PROTEIN, REAGENT_ID_MILK
 		)
+	import_job = null
 
 /obj/machinery/chemical_dispenser/biochemistry/full
 	spawn_cartridges = list(
@@ -32,6 +34,9 @@
 			/obj/item/reagent_containers/chem_disp_cartridge/milk
 		)
 
+/obj/machinery/chemical_dispenser/ert/specialops
+	import_job = null
+
 /obj/machinery/chemical_dispenser/ert/specialops
 	spawn_cartridges = list(
 			/obj/item/reagent_containers/chem_disp_cartridge/inaprov,
@@ -70,3 +75,4 @@
 	name = "chemical dispenser"
 	icon_state = "dispenser_2way"
 	desc = "A mysterious machine which can fabricate many chemicals."
+	import_job = null

maps/redgate/fantasy_items.dm

@@ -438,6 +438,7 @@
 	icon_state = "kettle"
 	ui_title = "kettle"
 	accept_drinking = 1
+	import_job = null
 
 /obj/machinery/chemical_dispenser/kettle/full
 	spawn_cartridges = list(