* Remove xsettings support. Use a cleaner way to detect config changes by monitor StyleChange events.
* Add Fm::IconTheme::changed() signal which is emitted when the icon theme name is changed.
* Replace nested Fm::PlacesModel::Item and related classes with their own separate toplevel classes.
* Fix fallback icon when a platform plugin is abscent.
* Make Fm::IconTheme::checkUpdate() a static function.