fix #31051
Fix user max quantization value
Fix editable columns for all tracks only
Fix track numbers in vertical header of MIDI import table
Multistaff bar lines for grand staff instruments
Update MIDI import tests - add bar line span
Reduce max tuplet limit for bar to 17
Make resource manager text cells not editable
Merge pull request #1244 from lvinken/musicxml-fixes

fix #31051
Merge pull request #1249 from trig-ger/midi_fixes

Fixes for MIDI import
Merge pull request #1252 from trig-ger/rc_manager

Make resource manager text cells not editable
Plugin work. Plugin maanger and styles of QML-called screen items
Corrections & updates for plugin manager. Replace style settings as
before this branch.
Initial fix to prevent serveral plugin crashes.
Further work required.
Fix #25292 Fix #25604 Fix #25051
Provide the base window as widget reference to style methods that user
it if one isn't provided, as is the case when drawing QtQuick objects