AP Update

Buffed the AP Rates of lesser executed moves.

Good - 0.2 -> 0.4
Great - 0.2 -> 0.6
Excellent - 0.65 -> .8
Perfect - 1 -> 1

For reference, this is the frame timing you have to hit to get the rating.

Good - 3 Frames Early
Great - 2 Frames Early
Excellent - 1 Frame Early
Perfect - On Exact Frame

Massively upgraded the visuals of the backdrop.