What this MR does / why does DuMux need it:
Port chapter 2.3 from the handbook to Markdown. It also removes the chapter from the handbook. The parameter section is adapted following the content of the dumux course.
What this MR does / why does DuMux need it:
Port chapter 2.3 from the handbook to Markdown. It also removes the chapter from the handbook. The parameter section is adapted following the content of the dumux course.