remove some superfluos QString() calls
some fixes from cppcheck analysis
fix #41121: crash when trying to open recent score

that doesn't exist anymore
Merge pull request #1522 from Jojo-Schmitz/recent

fix #41121: crash when trying to open recent score, that doesn't exist anymore
Merge pull request #1521 from Jojo-Schmitz/superfluos-QString

remove some superfluos QString() calls
fix import of custom KeySig from MuseScore 1.3 files
Merge pull request #1524 from AntonioBL/custom_keysig

fix import of custom KeySig from MuseScore 1.3 files
Merge pull request #1523 from AntonioBL/cppcheck

some fixes from cppcheck analysis
Open soundfont sf2/sf3 with MuseScore (part 1)
Open soundfont sf2/sf3 with MuseScore (part 2, windows)
better messages when adding soundfont, fix error message when dragging a file
even better wording for soundfont addition
add soundfont dialog should be on top of synthesizer dialog
fix typo