fix #23038: make tooltip translatable

and also generate the list of meta tags on the fly and from the current
score. Show their current values too.
fix #24773
Merge pull request #776 from lvinken/24773-musicxml-system-distance

fix #24773
Merge pull request #765 from Jojo-Schmitz/23038-reduce-height-of-dialogs

fix 23038: make tooltip translatable
enabling more metaTags
fixing typos found along the way
fixing the regression test files in mtest #1

tst_biab, tst_capalla_io, tst_guitarpro, tst_barline, tst_beam,
tst_chordsymbol, tst_clef, tst_clef_courtesy, tst_tuplet,
tst_concertpitchbenchmark, tst_join, tst_keysig, tst_benchmark
tst_repeat, tst_split, tst_splitstaff, tst_timesig and tst_transpose,