propertyTypeChartConfig.add(propertyTypeMultiConfig);
propertyTypeChartConfig.setAnimationEnabled(true);
propertyTypeChartConfig.showWidget(CONFIG_IDX_BAR_COLUMN); // bar chart will be selected by default
// init kind filters
kindSingleConfig = new KindSingleFilterPanel(KIND_RADIO_GROUP);
kindSingleConfig.addOnChangeHandler(new KindSingleFilterPanel.OnChangeHandler() {
@Override
public void onChange(KindFilterChoice val) {
refreshKindChart();
}