fix crash when undo paste of acciacatura
Fix 22168 - Augmentation dots in TAB with stem through staves are misplaced.

Fixed by assigning a default distance fret_no - dot and dot - dot in Note::layout2().
Merge pull request #458 from mgavioli/Fix_22168_Augmentation_dots_in_tabs

Fix 22168 - Augmentation dots in tablatures
fix multiple entries in Portaudio comboboxes