Hard upstream sync (#6951)

* maps - none of our changes included yet i'll get them in after i finish up the rest of the sync

* sync part 1 - underscore folders in code

* controllers folder

* datums folder

* game folder

* cmon, work

* modules - admin to awaymissions

* cargo to events

* fields to lighting

* mapping > ruins

* rest of the code folder

* rest of the folders in the root directory

* DME

* fixes compiling errors. it compiles so it works

* readds map changes

* fixes dogborg module select

* fixes typo in moduleselect_alternate_icon filepath

code/modules/events/prison_break.dm

@@ -62,6 +62,8 @@
 				temp.update_icon()
 			else if(istype(O, /obj/machinery/door/airlock))
 				var/obj/machinery/door/airlock/temp = O
+				if(temp.critical_machine) //Skip doors in critical positions, such as the SM chamber.
+					continue
 				temp.prison_open()
 			else if(istype(O, /obj/machinery/door_timer))
 				var/obj/machinery/door_timer/temp = O