Afegit so de service_menu_back

Retocats els audios de service menu
Afegit so a ENTER NAME
Arreglos visuals a ENTER NAME

config/assets.txt

@@ -52,6 +52,7 @@ SOUND|${PREFIX}/data/sound/notify.wav
 SOUND|${PREFIX}/data/sound/player_collision.wav
 SOUND|${PREFIX}/data/sound/power_ball_explosion.wav
 SOUND|${PREFIX}/data/sound/service_menu_adjust.wav
+SOUND|${PREFIX}/data/sound/service_menu_back.wav
 SOUND|${PREFIX}/data/sound/service_menu_move.wav
 SOUND|${PREFIX}/data/sound/service_menu_select.wav
 SOUND|${PREFIX}/data/sound/stage_change.wav