Previously this was done in every apply call. Unfortunately, the
initial condition for the algorithm was only satisfied in the first call.
This patch make sure that initGhostsAndOwners is only called during the
first apply method.


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/branches/strip-pdelab@13266 2fb0f335-1f38-0410-981e-8018bf24f1b0