small tweaks

- fixed creambeasts and chocoslimes fighting
- added a gym to Xenoarch base
- assigned Fanatic Feeders to Syndicate faction, so the turrets don't do friendly fire
- small bits of GATO reflavoring
- ported Spider Legs (wings slot), gator taul tail and alt naga tail sprite from Virgo

code/modules/events/major_dust.dm

@@ -10,7 +10,7 @@
 	var/reason = pick(
 		"The station is passing through a debris cloud, expect minor damage \
 		to external fittings and fixtures.",
-		"Nanotrasen Superweapons Division is testing a new prototype \
+		"GATO Superweapons Division is testing a new prototype \
 		[pick("field","projection","nova","super-colliding","reactive")] \
 		[pick("cannon","artillery","tank","cruiser","\[REDACTED\]")], \
 		some mild debris is expected.",
@@ -25,4 +25,4 @@
 				var/obj/item/paper/P = new(C.loc)
 				P.name = "Collision Alert"
 				P.info = "[pick(reason)]"
-				P.update_icon()
+				P.update_icon()