Number of knob/indicator positions should match number of sounds in library

[Alex-L-Crane]

right now the final sound in the list is repeated to fill remaining position slots. Let's have the list loop back to the beginning and start scrolling agin instead of repeating the last sound. In case that's confusing: Currently, slots 1-12 all contain unique sounds, then the sound in slot 12 is repeated 6 more times to fill the last few slots and total 18. Let's have the selector scroll to 12, then start over at one instead. If there we 14 sounds, it would scroll to 14, then start over at 1, ect. we don't need to change the number of indicators displayed, just how far it will scroll.

[JoshuaBThompson]

Fixed in GrooverAlpha branch