Fixes #4816 (or attempts to)

Creates proper instances of areas in engineering to prevent issues with APCs.
Removes one of the two APCs in the medbay sleeper area.
Corrects a few more places where atmosphere alarms would lower shutters in adjacent but otherwise unrelated rooms.
Adds a camera at the virology entrance to remove a tiny strip of missing coverage that prevented AI from assisting people in and out from viro (perhaps intended).

code/game/area/Space Station 13 areas.dm

@@ -962,6 +962,10 @@ var/list/ghostteleportlocs = list()
 		name = "\improper Engineering Monitoring Room"
 		icon_state = "engine_monitoring"
 
+	atmos_monitoring
+		name = "\improper Atmospherics Monitoring Room"
+		icon_state = "engine_monitoring"
+
 	engineering
 		name = "Engineering"
 		icon_state = "engine_smes"
@@ -982,10 +986,18 @@ var/list/ghostteleportlocs = list()
 		name = "\improper Engineering Hallway"
 		icon_state = "engine_hallway"
 
+	engine_hallway
+		name = "\improper Engine Room Hallway"
+		icon_state = "engine_hallway"
+
 	engine_eva
 		name = "\improper Engine EVA"
 		icon_state = "engine_eva"
 
+	engine_eva_maintenance
+		name = "\improper Engine EVA Maintenance"
+		icon_state = "engine_eva"
+
 	workshop
 		name = "\improper Engineering Workshop"
 		icon_state = "engine_storage"