update reference solutions to commit r8383.

Removed viscosity for standard output. 
Assignment of equilibrium mass fraction for nphase if it is not present mainly affects density of nphase. This will also result in slightly different fluxes due to central averageing in phase potential.


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@8384 2fb0f335-1f38-0410-981e-8018bf24f1b0