Set Mscore::DPI from logical DPI not physical
Initial implementation of copying and pasting of staff collateral elements.
Added tests for the elements currently supported: articulations, chord names, figured bass, lyrics.
Improvement for compound meter count-in

Compound-meter-like time signatures (3*n/d where n > 1) are NOT counter as compound meters (one beat every 3 d units) but as 'triplets' of 'click'-'clack'-'clack' if:

1) the denominator is 1/4 or longer

2) the tempo for the compound unit would be slower then 60MM
Added colour property to the lines of a staff.

Colour is set with a colour box in the Staff Properties dialogue box.
Names shown in tooltips for items of the note-head palette are obscure glyph tags.

This patch uses symbol "user names" (SymbolNames::mname) instead of SymbolNames::name for the note-head palette items.
change the default language to en
revert gen-qt-project, list of ts files needed to generate qm files
generate mscore_en.ts
fix #23304
fix #23219
Merge pull request #505 from softins/logical-dpi

Set Mscore::DPI from logical DPI not physical
Merge pull request #507 from mgavioli/multi-symbol-paste

Pasting of symbol list selection
Merge pull request #512 from mgavioli/staff_colour

Added colour property to the lines of a staff.
Merge pull request #519 from Jojo-Schmitz/orig.strings

fix #23219
fix #23296
fix translation of menu items
fix #23341
fixes for input state
Merge pull request #518 from mgavioli/PALETTE_user-friendly_names_for_notehead_palette

Use user-friendly names for items in the note-head palette