FEM: command purge results, make it independent from ccx analysis tools
FEM: command purge results, make it independent from ccx analysis tools

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master