This way apps can use the class without larger deps of kowidgets
KoFileDialog belongs to "Tier 0" Also move filedialogtester to widgetutils: * remove all i18n - not needed for the test * rename to kofiledialogtester * move to tests/ subdir * remove main.cpp which is too general file, place main() in KoFileDialogTester.cpp * by the way remove link to ki18n in KoPropertiesTest