String improvements

src/libs/qmljs/qmljsstaticanalysismessage.cpp

src/libs/timeline/qml/CategoryLabel.qml

src/plugins/android/androidbuildapkwidget.ui

src/plugins/android/androiddeployqtstep.cpp

src/plugins/perforce/perforceplugin.cpp

src/plugins/projectexplorer/jsonwizard/jsonwizardfactory.cpp

src/plugins/projectexplorer/kit.cpp

src/plugins/projectexplorer/kitinformationconfigwidget.cpp

src/plugins/projectexplorer/projectexplorer.cpp

...ugins/qmakeandroidsupport/createandroidmanifestwizard.cpp

src/plugins/qmakeprojectmanager/qmakestep.ui