Progress with PercussionPaletteForm

The PercussionOrnamentsForm is not yet
working. I want to revise the normal
OrnamentSettingsForm first.
Reprogrammed OrnamentSettingsForm

This no longer uses krystals to define ornaments.
Updated moritzKrystalscore.xsd.
The OrnamentSettingsForm both loads and
saves the new format correctly.
OrnamentSettingsForm.cs needs to be tidied
up and checked for unreachable code.