State of investigating pc-s curves, all local operators implemented

dune/phasefield/base_parameters.hh

dune/phasefield/chns_base.hh

dune/phasefield/porenetwork/2p_chns.hh

...eld/porenetwork/fem_2p_cahnhilliard_pressuresaturation.hh

...eld/porenetwork/fem_2p_navierstokes_pressuresaturation.hh

...field/porenetwork/fem_2p_navierstokes_transmissibility.hh

dune/phasefield/porenetwork/pn_2pflow.hh

src/pntest/pn2p.ini