Patch has been applied upstream

*Get rid of lowerLeftX, etc

*Get rid of lowerLeftX, etc

* Get rid of lowerLeftX, etc

*Remove unused parameters
*Clean-up

* Reduce number of template arguments
* Rename property from tau to TauTortuosity

* Add ref solution

*Clean-up
*Add cc test

* Use 2D yasp grid
* clean up and rename

* 2p1cni model to simulate steam injection

Holger Class authored 8 years ago and Bernd Flemisch committed 8 years ago

lecture. Unlike there, we use here a non-zero capillary pressure to use
rel-perms and capillary pressures from dumux stable

The installexternal.sh script can be used to install opm
and ert and to apply patches to opm-common and opm-parser.

With Opm release 2016.04, the module dune-cornerpoint has been
renamed to opm-grid. Interfaces changed without deprecation. There
doesn't seem to be a preprocessor macro to check for the employed
Opm version. Therefore, drop support for older versions and only
support 2016.04.

lecture. Unlike there, we use here a non-zero capillary pressure to use
rel-perms and capillary pressures from dumux stable

Everything in our .hh files is defined within the namespace `Dumux`.
There were numerous occurrences of `Dumux::` qualifiers that were
unnecessary. Remove those occurrences. Necessary qualifications
remain, such as `typedef Dumux::H2O<Scalar> H2O;`.

* Class can only be used for mpnc

this means
* the first vtk (normally the initial solution) is *-00000.vtu
* if all timesteps are writen the time step number and vtk number correspond

Reviewed by heck

Instead of calculating it in the local residual, the effective permeability
is now calculated within a new file permeabilityrutqvisttsang.hh in the
folder dumux/material/fluidmatrixinteractions.
This is just one possible effective permeability model. Several others can be
added and set via the property EffectivePermeabilityModel.

Up to now, the permeabilities were averaged twice, first by calculating
the mean of the mean of the intrinsic permeabilities in the flux variables
and later by averaging the effective permeabilities in the local residual.
This is redundant. Now, only the mean of the effective permeability is
calculated in the local residual.
This change required to change the reference files for the sequential and
the parallel test.

Move all testing related scripts to subfolder testing

The reference solutions have been changed because of the previous commit (change pointers to shared pointers)

Add a FieldType enum that controls the field type we generate,
e.g. log10, scalar. Could be extended by e.g. tensor in the future.

* Remove EntityPointer deprecated in dune2.4
* Use range-based for loops over gridview
* Use std::vector instead of blockvector