Feature/limit tests to one minute

Limit the tests in lecture to a maximum of 60 seconds to reduce computational effort for testing.

* [x] Fix fuelcell
* [x] Fix co2plume
* [x] Fix sagd
* [x] Fix convective mixing
* [ ] Fix naplinfiltrationexercise
* [x] Fix remediationscenariosexercise

See merge request !8

The input interface got error checking.
The output name is ńow set accordong to the scenario.
Grid file removed and input gridcreator used.
Added EPSILONS (!) for floating point comparisons.
Test time reduced to about 40 seconds.

[folderstructure] Alter includes to new folder structure in dumux

Removes deprecation warnings because of new folder structure in dumux

See merge request !7

Reduce the end time of the simulation when testing.
*ALWAYS* use epsilons for floating point comparisons!

At 10s we almost reached equilibrium already.
Turn off line search--not needed--gained a few seconds.
Change input file to unix style line endings.

*ALWAYS* use epsilons for floating point comparisons!!

* Limit automated test time increasing injection rate und reducing TEnd.
* Using the standard grid creator.
* Follow naming conventions.
* Fix indent.

Rename COPYING to LICENSE.md

Bugfix/compile with dumux master



See merge request !6

changed one of the modifications made by Timo before



See merge request !5

Fixed a errors made in commits before



See merge request !4

Cleanup/dune 2.4 features

Cleanup regarding the dependency upgrade to dune 2.4.

* Use of initializer lists for FieldVectors
* Read vectors from input file
* General formatting and white space
* Remove unused typedefs, variables, files 

See merge request !1

[co2plumeshape] Use soldependent Neumann BC

The enthalpy of the injected CO2 is now evaluated using the
actual pressure and temperature at the injection well.

Removed some unused code.

See merge request !3

The enthalpy of the injected CO2 is now evaluated using the
actual pressure and temperature at the injection well.

Removed some unused code.

[parkervangenuchten] Use the new ParkerVanGenuchten material laws

The 3p ParkerVanGenuchten material laws have been revised. The applications
now use these classes.

See merge request !2

The 3p ParkerVanGenuchten material laws have been revised. The applications
now use these classes.

Added dune_enable_all_packages() that was missing
and prevented compilation.

Reviewed by Timo and Kilian