many strings don't seem to be translable

many strings don't seem to be translable resp. but don't show up in MuseScore, regardless being translated and updated (via Resource Manager)

For (numerouus) example have a look at the menus, the main menu is translated, but in the submenus only very few items are translated (in MuseScore, they are translated on Transifex!)

Even if picking the 100% complete German or Spanish Translation!

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