Gui: [skip ci] restore bottom margin of group box in placement dialog
Gui: [skip ci] restore bottom margin of group box in placement dialog

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