Makes the arrivals shuttle more robust (#2565)

It's harder to mess with the shuttle and after failing to return so many times it boots people off. It also connects the airlocks to distro and gives it a backup canister.

code/controllers/subsystems/arrivals.dm

@@ -9,6 +9,7 @@
 
 	var/launch_time			//the time at which the shuttle will be launched
 	var/wait_for_launch = 0	//if the shuttle is waiting to launch
+	var/failreturnnumber = 0 // the number of times the shuttle failed to leave the station
 	var/list/current_mobs = list()
 
 /datum/controller/subsystem/arrivals/New()

code/controllers/subsystems/job.dm

@@ -324,7 +324,7 @@
 
 	var/datum/job/job = GetJob(rank)
 	var/list/spawn_in_storage = list()
-
+	
 	if(job)
 		var/list/custom_equip_slots = list() //If more than one item takes the same slot, all after the first one spawn in storage.
 		var/list/custom_equip_leftovers = list()
@@ -527,7 +527,8 @@
 
 	var/datum/job/job = GetJob(rank)
 	var/list/spawn_in_storage = list()
-	H.odin_despawn_timer = addtimer(CALLBACK(H, /mob/living/carbon/human/.proc/odin_timeout), 15 MINUTES, TIMER_STOPPABLE)
+	H.odin_despawn_timer = addtimer(CALLBACK(H, /mob/living/carbon/human/.proc/odin_timeout), 10 MINUTES, TIMER_STOPPABLE)
+	H <<"<span class='notice'>You have ten minutes to reach the station before you will be forced there.</span>"
 
 	if(job)
 		//Equip custom gear loadout.
@@ -747,7 +748,7 @@
 	//spawn at one of the latespawn locations
 
 	var/datum/spawnpoint/spawnpos
-
+	
 	if(H.client.prefs.spawnpoint)
 		spawnpos = spawntypes[H.client.prefs.spawnpoint]