Fix single voice MIDI import
fix mm rest creation for parts
Merge pull request #482 from trig-ger/midi_fixes

Fix single voice MIDI import
change PortAudio suggested latency to 20ms, potentially fix #21897, no harm on windows
fix #22787: Grace notes don't move after changing clef
fix #22601: Deleted bar not reinstated after undo
fix #22803: Delete note in note entry then press down, crash
Fix 22706 - TABs with duration symbols and rests set to show show weird symbols for measure rests.

Fixed by creating duration symbols from actual measure duration rather than from rest type.
Merge pull request #485 from mgavioli/Fix_22706_missing_symbol_in_tab_measure_rests

Fix #22706 - Missing symbols in TAB duration symbols