This implements the task of the last dumux day for the implicit tests...

This implements the task of the last dumux day for the implicit tests (common/decoupled/freeflow/geomechanics see earlier commit):
In test folder:
1. change SET_TYPE_PROP instead of SET_PROP where possible
2. Remove commented code where not needed
3. Remove unnecessary includes
4. Change the neumann/dirichlet,... functions to the corresponding atPos functions where globalPos is needed

The task for the multidomain folder will follow by thomas

Reviewed by bernd
 


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@14046 2fb0f335-1f38-0410-981e-8018bf24f1b0