fix #33081: acoustic bass channel info
Merge pull request #1309 from MarcSabatella/33081-bass-arco

fix #33081: acoustic bass channel info
use MusicXML formatting for first page header
header and footer fixes
fix #8924: native support for slash notation
fix #39421: fix selection detection of break plugin

similar to earlier fixes for colornotes (606b401) and notenames
(df6e8a0)
Merge pull request #1461 from Jojo-Schmitz/break-every-x-measures

fix #39421: fix selection detection of break plugin
fix double dialogs when error for login, fix modal message dialog
Merge pull request #1459 from lvinken/musicxml-font-handling

Musicxml font handling
do not init workspace if no UI
fix #39456: double click drum icon enters wrong segment/voice
fix #39476: corruption on entry of drum note onto segment with no element in voice 1
fix #39466: initially selected drum not active
add accent in Basic Palette
implement categories for template files in startcenter
sort score names in startcenter
simplify basic palette further
fix #37621
add score preview to save as dialog
default to show startcenter at startup