fix #31571: key sig for new transposing instrument
fix #33126 Pedal segment starting on same note where previous pedal segment ends does not continue pedal playback
fix #35621: pedal endpoint in multivoice context
fix #30796: pedal endpoint on last note of score
Fix bar line generated status when reading old scores

In old scores (1.x and transitional 2.0 scores, including templates and "My First Score"), regular bar lines are often needlessly stored in score files.

These bar lines are read back as non-generated, and may misbehave; for instance, may generate an extra 'courtesy' start-repeat at system end, if an start-repeat is added at the first measure of next system.

This fix normalizes bar line flags if, while reading them back, they are found to be normal.

Note: only a single line of code is changed in Measure::read() methods; the large number of affected files is due to test fixing.
Fix tests:

- adapt the tst_barline test code to the new flag logic;
- correct more test ref scores.
fix #11175: Drums do export to midi
fix #36391: Escaping html characters
fix #36446: ottava numbers only property not read in inspector
remove empty textline group from inspector
fix visualization of keysig drop target
Merge pull request #1306 from MarcSabatella/31571-only

fix #31571: key sig for new transposing instrument
fix #29826
Merge pull request #1320 from CombatCube/33126-pedal-playback

fix #33126: Pedal playback of connected/overlapping pedal segments
Merge pull request #1373 from MarcSabatella/inspector-line-cleanup

Inspector line cleanup
Merge pull request #1359 from MarcSabatella/35621-pedal-voice

fixes for pedal line editing
Merge pull request #1370 from Igevorse/bugs1

fix #11175: Drums do export to midi
Merge pull request #1371 from Igevorse/bugs2

fix #36391: Escaping html characters
Merge pull request #1361 from mgavioli/Fix_useless_non-generated_normal_barlines_in_old_scores

Fix bar line generated status when reading old scores