Search box/filter added to the instrument list
Merge branch 'InstrumentListSearch' of https://github.com/Soerboe/MuseScore
Fix #19902: in TAB's with the 'broken lines' flags, removing lines under a fret mark obliterated parts of other marks.
Merge pull request #203 from mgavioli/Fix_19902_tab_mark_vertical_collision

Fix #19902: TAB - vertical collision of fret marks