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/holodeck/computer.dm

@@ -162,8 +162,10 @@
 	nerf(!(obj_flags & EMAGGED))
 
 /obj/machinery/computer/holodeck/emp_act(severity)
+	. = ..()
+	if(. & EMP_PROTECT_SELF)
+		return
 	emergency_shutdown()
-	return ..()
 
 /obj/machinery/computer/holodeck/ex_act(severity, target)
 	emergency_shutdown()