make Entry._fill_internal_WMS more robust, and allow setting only one of minResolution and maxResolution in the database
make Entry._fill_internal_WMS more robust, and allow setting only one of minResolution and maxResolution in the database

tsauerwein/c2cgeoportal,tsauerwein/c2cgeoportal,tsauerwein/c2cgeoportal,tsauerwein/c2cgeoportal