Widescreen Titlescreens and some minor edits (#61609)

Changes our game to support widescreen titles, i'm working with the headmins to add these titles to the config as well.

Also:
title screen walls can no longer be examined
title screen itself can still be examined so admins can change it for the memes

_maps/map_files/generic/CentCom.dmm

@@ -1430,7 +1430,7 @@
 /turf/open/floor/iron/dark,
 /area/centcom/admin)
 "fX" = (
-/turf/closed/indestructible/riveted,
+/turf/closed/indestructible/start_area,
 /area/start)
 "fY" = (
 /obj/effect/landmark/start/new_player,
@@ -20909,21 +20909,21 @@ aa
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-aa
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+fX
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 aa
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@@ -21166,21 +21166,21 @@ aa
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+fX
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 aa
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