added scale to non-strict-params in WMSLegendGraphicRequest, added scale as property in WMSLegendGraphicParams
added scale to non-strict-params in WMSLegendGraphicRequest, added scale as property in WMSLegendGraphicParams

mapproxy/mapproxy,drnextgis/mapproxy,kaiCu/mapproxy,vrsource/mapproxy,vrsource/mapproxy,drnextgis/mapproxy,Anderson0026/mapproxy,geoadmin/mapproxy,kaiCu/mapproxy,Anderson0026/mapproxy,camptocamp/mapproxy,faegi/mapproxy,geoadmin/mapproxy,camptocamp/mapproxy,olt/mapproxy,faegi/mapproxy,olt/mapproxy,procrastinatio/mapproxy,mapproxy/mapproxy,procrastinatio/mapproxy