Thanks to Martin for fixing a c&p bug.

The parameter parser previously needed a TypeTag traits template argument only
to get the parameter tree type although a parameter tree is already handed it.
This was done to avoid an usused parameter message otherwise issued if the parameter
macros (which need the TypeTag) are not used. Twisted :/ (can't we refactor the parameter system?)

The new implementation has an optional input file name parameter which is taken from the
parametertree if it was provided as command line argument in the default start method. You
can also supply a specific file now statically in the code. If no name is given, the
parameter parser defaults to the <exectuable>.input pattern.

[gitignore] Ignore "Testing"

Once in a while a "Testing" folder occurs in my repository. I guess it is related to the build system / testing. Therefore I added to gitignore. Hope this is not breaking someones folder structure.

See merge request !243

[installexternal.sh] Fix download path for UG

* Automatically set the UG path in the *.opts files.
* Remove gstat from *.opts file. Is found automatically, if located in external folder.

See merge request !246

Feature/libs optimization

Add NLOPT and GLPK to DuMuX. These are libraries for nonlinear and linear optimization.

See merge request !245

* Automatically set the UG path in the *.opts files.
* Remove gstat from *.opts file. Is found automatically, if located in external folder.

The NLOPT and GLPK are libraries for nonlinear and linear
optimization algorithms.

Fix/couplingpwsn

See merge request !241

Fix/set internal energy

See merge request !244

Fix typos in documentation

[implicit][problem] Add initialPhasePresence function and forward to the respect…

…ive AtPos version with a default DuneThrow

See merge request !242

[implicit][problem] Add initialPhasePresence function and forward to the respective AtPos version with a default DuneThrow

[common] Fix includes for new start handling

See merge request !240

[bboxtree] Only call bounding box tree when there are point sources

When making the point source map we only want to make sure the bounding box
tree is initiated if there are any point sources. By a previous commit
this was mistakenly put in the beginning of the method so that the bounding
box tree is always built.

Maybe has to be tested with dumux-multidimension too.

See merge request !238

Feature/improve dumux start

Put Parameter Parser and start message in separate class.

Fixes #342.

See merge request !237

When making the point source map we only want to make sure the bounding box
tree is initiated if there are any point sources. By a previous commit
this was mistakenly put in the beginning of the method so that the bounding
box tree is always built,

[postprocessing] Add possibility to name the outputfiles differently



See merge request !236

[stokes][localResidual] Add a wall friction term

*To account for a dimensional reduction from 3d to 2d

To do:
- [x] add  property to switch on/off
- [x] cite source

See merge request !235

Feature/improveplotmateriallaws



See merge request !234

*They mess up the file name...

interaction -> openPlotWindow

[materiallaw] Improve reference for Henry coefficient for H2OAir



See merge request !232

[implicit][2p] Add function which returns the viscosity of the phases



See merge request !233

*To account for a dimensional reduction from 3d to 2d