Fix sounds & set defaults

Set persistent values to False if None
Play both On & Off Sound
onclick_audio, hardcode the audio and instead have a flag system for
just the transitions menu

game/script.rpy

@@ -38,6 +38,11 @@ init python:
     renpy.music.register_channel("ambient2","sfx",True,tight=True)
     if persistent.scroll == True:
         config.keymap['dismiss'].append('mousedown_4')
+    elif persistent.scroll == None:
+        persistent.scroll = False
+
+    if persistent.lewd == None:
+        persistent.lewd = False
 
 transform randPosition:
   alpha 0.0