[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

[plotmateriallaws] Outsource plot command, so that all plot options can be defined at a problem-level

[cleanup][deprecations] Remove deprecated stuff after release 2.10



See merge request !231

[material] Introduce set functionality for setting the regularization thresholds

enables to:
* use different regularization methods for different soils
* change regularization threshold at runtime

See merge request !230

enables to:
* use different regularization methods for different soils
* change regularization threshold at runtime

Feature/plotmateriallawlogscale



See merge request !229

[start.hh] Automatically use current Version number



See merge request !228

Half number of std::pow calls in thermal conductivity laws

I'd like to back-port this to 2.10 if it proofs itself.

See merge request !226

Bump version

* include section in changelog
* remove obsolete CTestConfig.cmake

See merge request !225

* include section in changelog
* remove obsolete CTestConfig.cmake

[boxadaptive] Update of boxadaptive reference file



See merge request !224

[cmake] Fix installed headers



See merge request !222