remove bad debug msg
Fix #35136 : Tremolo bar always on top staff + crash on delete

A) A tremolo bar is always displayed on the top staff, regardless of the staff is it applied to

corrected by adding the ON_STAFF flag to a new `TremoloBar` object

B) Deleting a tremolo bar crashes the programme

corrected by adding the relevant case to the `Segment::remove()` method
fix #33391: view jumps when pasting in continuous view
fix #36621: display middle C as C4
fix #36641: "Edit Style" dialog wider and higher than necessary
reduce palettes for basic workspace
add workspace functions to palettebox
fix #36736: Articulation symbols too small and shifted left in "Edit Style" dialog
Merge pull request #1380 from jpfleury/36736-articulation-symbols

fix #36736: Articulation symbols too small and shifted left
Merge pull request #1379 from jpfleury/36641-edit-style-dialog-size

fix #36641: "Edit Style" dialog wider and higher than necessary
fix #35176: ottava layout in various special situations
Merge pull request #1378 from MarcSabatella/36621-middle-c4

fix #36621: display middle C as C4
Merge pull request #1377 from MarcSabatella/33391-adjust-continuous

fix #33391: view jumps when pasting in continuous view
Merge pull request #1376 from MarcSabatella/35176-ottava-end

fix #35176: ottava layout in various special situations
Merge pull request #1374 from mgavioli/Fix_35136_tremolo_bar

Fix #35136 : Tremolo bar always on top staff + crash on delete
fix #36761: horizontal position of multivoice articulations
fix #36746, link to handbook 2.0
remove unused stack-down action. Added here but never implemented http://sourceforge.net/p/mscore/code/4066/
fix #36656: width (of lines) vs. thickness

and consolidate volta "Continue height".
Also change "Fix" to "Fixed" to make clearer it is an adjective, not a
noun or verb.
And make "Numbers only" Sentence style.
Get rid of unneeded abbreviations "Visib." and "Link."
Change "Early music" to Sentence case.
change "AUTO" to "Automatic" in measure properties

and also capitalize the other entries in that popup