fix #6705 Replacing chordsymbols in copy paste staff
Added test for chord symbol overwrite
fix tests
remove outdated templates, change default score to an empty treble clef piano one, move tab_sample to data, remove unused files
fix #29591: Percussion staff resulting from MIDI import shows key signature and accidentals
rework initial clef, staff type change
- initial clef is now determined by instrument
- extend instrument to allow different clefs for stave (piano)
- do not write first generated clef
fix midi tests for drum staff
Merge pull request #1129 from BartlomiejLewandowski/6705-chordsymbol-overwrite

Chordsymbol overwrite