Recompiled the scores

ChordDefs no longer repeat by default.
Also:
1. Carried out a major reorganisation:
Scores are now created directly in the
assistantPerformer/scores directory in
my website in Visual Studio. From there,
they are under Git control, and can be copied directly to the on-line website.
2. When the midiOutputDevice is not available, the _audioButtonsControl is simply not created.