fix update of dynamic group data
fix update of dynamic group data

fix #2015
fix #70

fusioninventory/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi