Fixed DialogLoader buttons and size, adjust others

src/qml/DialogLoader.qml

src/qml/TtoolBar.qml

src/qml/about/TaboutNootka.qml

src/qml/exam/ExamSummary.qml

src/qml/exam/StartExam.qml

src/qml/level/LevelCreator.qml

src/qml/score/MelGenDialog.qml

src/qml/settings/ColorButton.qml

src/qml/settings/GlobalPage.qml

src/qml/settings/ScorePage.qml

src/qml/settings/TsettingsDialog.qml

src/qml/shared/PagesDialog.qml

src/qml/shared/PaneButton.qml

src/qml/sound/+android/TunerDialog.qml

src/qml/sound/TunerDialog.qml