Add MusicXML Import/Export compatibility with repeat counts.
fix #30271

	modified:   mscore/musescore.cpp
	modified:   mscore/musescore.h
	modified:   mscore/scoreaccessibility.cpp
delete older translations on start
ignore older translations when checking for updates
Merge pull request #1237 from Jojo-Schmitz/translation

ignore/delete older translations on update/startup
fix #31136: Parts saved as MSCZ files from MS 2.0 Beta 1 do not save subsequent edits
Merge pull request #1236 from andreituicu/fix_30271

fix search dialog #30271
Merge pull request #1235 from mbrouard/repeatCountXML

Add MusicXML Import/Export compatibility with repeat counts.
clean up accessors in musescore.h