This fixes Gentoo bug #507712 (https://bugs.gentoo.org/507712)

Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>
fix #24951: grace notes after enabled
update mtest
fix warnings reg. unused parameters
removing 2 qDebug() calls

followng some discussion on IRC
Make zoom() code a little nicer
fix bogus comment
fix #25613
fix #25616: Rehearsal mark from MuseScore 1.3 causes bad layout and crash
update Gonville
fix #23006
update mtest for guitarpro
fix #25618
Merge pull request #880 from Jojo-Schmitz/warnings

fix 2 warnings reg. unused parameter, remove 2 qDebug calls and fix a bogus comment
Fixed brace's tips

Fixed brace's tips - brace's tips will be look better
ScoreView::curGrip and ScoreView::defaultGrip are not initialized: nudging elements with no grip (like accidentals) crashes.
Merge pull request #885 from mgavioli/Fix_uninitialized_edit_grips

Fix non-initialized edit grips.
fix 25631: add Nynorsk
Merge pull request #886 from Jojo-Schmitz/25631-nynorsk

fix #25631: add Nynorsk
fix #25636