Add a few variables to the AI announcment message

Variables added:
 - $species : Species name of the individual.
 - $age : Character age
 - $gender : Character gender, limited to female/male, sorry tumblr

code/modules/mob/living/silicon/ai/ai.dm

@@ -838,7 +838,7 @@ var/list/ai_verbs_default = list(
 	set desc = "Change the message that's transmitted when a new crew member arrives on station."
 	set category = "AI Commands"
 
-	var/newmsg = input("What would you like the arrival message to be? Use $name to substitute the crew member's name, and use $rank to substitute the crew member's rank.", "Change Arrival Message", arrivalmsg) as text
+	var/newmsg = input("What would you like the arrival message to be? List of options: $name, $rank, $species, $gender, $age", "Change Arrival Message", arrivalmsg) as text
 	if(newmsg != arrivalmsg)
 		arrivalmsg = newmsg
 		usr << "The arrival message has been successfully changed."

code/modules/mob/new_player/new_player.dm

@@ -342,6 +342,9 @@
 						var/arrivalmessage = announcer.arrivalmsg
 						arrivalmessage = replacetext(arrivalmessage,"$name",character.real_name)
 						arrivalmessage = replacetext(arrivalmessage,"$rank",rank ? "[rank]" : "visitor")
+						arrivalmessage = replacetext(arrivalmessage,"$species",character.species.name)
+						arrivalmessage = replacetext(arrivalmessage,"$age",num2text(character.age))
+						arrivalmessage = replacetext(arrivalmessage,"$gender",character.gender == FEMALE ? "Female" : "Male")
 						announcer.say(";[arrivalmessage]")
 			else
 				if(character.mind)
@@ -469,11 +472,11 @@
 		if(client.prefs.disabilities & DISABILITY_FLAG_BLIND)
 			new_character.dna.SetSEState(BLINDBLOCK,1,1)
 			new_character.sdisabilities |= BLIND
-			
+
 		if(client.prefs.disabilities & DISABILITY_FLAG_MUTE)
 			new_character.dna.SetSEState(MUTEBLOCK,1,1)
 			new_character.sdisabilities |= MUTE
-			
+
 		chosen_species.handle_dna(new_character)
 
 		domutcheck(new_character)