FEM: C++ constraints, clear selection on unsetEdit, same system as it is on Python constraints
FEM: C++ constraints, clear selection on unsetEdit, same system as it is on Python constraints

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