Merge branch 'ukulele', solved conflicts

picts/pane/i-08.png

sounds/ukulele.ogg

spare_parts/scalable/pane/i-08.svg

src/dialogs/tlevelsdefs.cpp

src/libs/core/instruments/tguitarbg.cpp

src/libs/core/music/tinstrument.cpp

src/libs/core/music/tinstrument.h

src/libs/core/music/ttune.cpp

src/libs/core/music/ttune.h

src/libs/core/tnootkaqml.cpp

src/libs/sound/toggscale.cpp

src/nootka-android.qrc

src/nootka.qrc

src/qml/MainScore.qml

src/qml/instruments/Ukulele.qml

src/qml/settings/InstrumentPage.qml

src/qml/shared/InstrumentSelector.qml

src/qml/wizard/WizardClef.qml

src/qml/wizard/WizardUkulele.qml