Renames "non-crew" to "outsider," provides external ID

-Renames "non-crew" to "outsider."
-Provides an external ID to outsiders, allowing PDA use.
-Improves grammar in outsider job description
-Reformats outsider to use a define for the job name, replaces hard-coded uses of "non-crew" with said define.

modular_chomp/code/modules/client/preferences_spawnpoints.dm

@@ -1,7 +1,7 @@
 /datum/spawnpoint/stationgateway
 	display_name = "Station gateway"
 	msg = "has completed translation from station gateway"
-	disallow_job = list("Non-Crew")
+	disallow_job = list(JOB_OUTSIDER)
 
 /datum/spawnpoint/stationgateway/New()
 	..()
@@ -23,7 +23,7 @@
 /datum/spawnpoint/plainspath
 	display_name = "Sif plains"
 	msg = "has checked in at the plains gate"
-	restrict_job = list("Non-Crew")
+	restrict_job = list(JOB_OUTSIDER)
 
 /datum/spawnpoint/plainspath/New()
 	..()