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/power/lighting.dm

@@ -662,10 +662,12 @@
 	on = TRUE
 	update()
 
-/obj/machinery/light/tesla_act(power, explosive = FALSE)
-	if(explosive)
-		explosion(src.loc,0,0,0,flame_range = 5, adminlog = 0)
-	qdel(src)
+/obj/machinery/light/tesla_act(power, tesla_flags)
+	if(tesla_flags & TESLA_MACHINE_EXPLOSIVE)
+		explosion(src,0,0,0,flame_range = 5, adminlog = 0)
+		qdel(src)
+	else
+		return ..()
 
 // called when area power state changes
 /obj/machinery/light/power_change()