[dispersion] rename tensortype to model

CHANGELOG.md

dumux/common/deprecated.hh

dumux/common/properties.hh

dumux/flux/box/dispersionflux.hh

dumux/flux/cctpfa/dispersionflux.hh

dumux/porenetwork/1pnc/model.hh

dumux/porousmediumflow/1pnc/model.hh

dumux/porousmediumflow/1pnc/volumevariables.hh

dumux/porousmediumflow/1pncmin/model.hh

dumux/porousmediumflow/fluxvariables.hh

dumux/porousmediumflow/nonisothermal/model.hh

dumux/porousmediumflow/properties.hh

dumux/porousmediumflow/tracer/model.hh

dumux/porousmediumflow/tracer/volumevariables.hh

test/porousmediumflow/1pnc/dispersion/properties.hh