New events, broken windows and doors (#102)

* Add electrified door event

* Add more verbose announcement to wallrot

* Add window breaking event

* Add window breakage to event rotation

code/_helpers/events.dm

@@ -0,0 +1,15 @@
+/proc/get_station_areas(var/list/area/excluded_areas)
+	var/list/area/grand_list_of_areas = list()
+	// Assemble areas that all exists (See DM reference if you are confused about loop labels)
+	looping_station_areas:
+		for(var/parentpath in global.the_station_areas)
+			// Check its not excluded
+			for(var/excluded_path in excluded_areas)
+				if(ispath(parentpath, excluded_path))
+					continue looping_station_areas
+			// Otherwise add it and all subtypes that exist on the map to our grand list
+			for(var/areapath in typesof(parentpath))
+				var/area/A = locate(areapath) // Check if it actually exists
+				if(istype(A) && A.z in using_map.player_levels)
+					grand_list_of_areas += A
+	return grand_list_of_areas