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/game/objects/structures/barsigns.dm

@@ -106,8 +106,11 @@
 
 
 /obj/structure/sign/barsign/emp_act(severity)
-    set_sign(new /datum/barsign/hiddensigns/empbarsign)
-    broken = 1
+	. = ..()
+	if(. & EMP_PROTECT_SELF)
+		return
+	set_sign(new /datum/barsign/hiddensigns/empbarsign)
+	broken = 1