Rename Parameter "GrainFouriersLaw.UseAdaptedVolumeForPyramid"
Rename parameter "GrainFouriersLaw.UseAdaptedVolumeForPyramid"
in /flux/porenetwork/grainfourierslaw.hh to a more self-explaining name.
E.g. use same as in /test/multidomain/dualnetwork/fourierslaw.hh as it is exactly the same ("Problem.UseVolumeEqualPyramid"
).