FIX - limits the number of trackDidFinishPlaying notifications that the PlayerVC can receive to 1 in 15 seconds
FIX - button to dismiss the helpVC now spans the entire device on iPhone
DATA - changes available colors
FIX & ENHANCEMENT - TrackVC and PlayerVC now update properly after a track finishes. Added attribution for nature soundscapes in the SettingsVC and added highlighted states for all text buttons there