Remove fade-in transitions from Play All, remove static transition fr…

[CeaneC]

…om skits that fade out

• All skits have a preserve_transition parameter
  • When true, it will fade in as normal.
  • When false, it won't fade in as it expects the glitch transition.
• Skit transition has a transition_glitch_intro parameter
  • When true, the transition will start with a glitch effect
  • When false, it won't.
  • Skits that end on a black screen set the value to false so they won't have an invisible glitch
  • Value is only set to false when preserve_trasition is false, so that it doesn't affect single-play skits.