cleaned up the stokes-darcy models:
  - SET_TYPE_PROP task from Dumux Day
  - cleaned up input
  - removed commented lines of code
  - removed try/catch blocks

updated the coupled-freeflow reference results which was broken in one
of the previous commits

reviewed by gruenich



git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@14094 2fb0f335-1f38-0410-981e-8018bf24f1b0