Update deal.II adapter docs

[davidscn]

Related to precice/dealii-adapter#50 and precice/tutorials#166 and to be merged with precice/tutorials#160.

[davidscn]

The docs were quiet outdated. Not sure if anyone wants to review here. Ready to merge.

We should delete the adapter wiki as a post-merge step.

[davidscn]

TODO: Add link to parameter file reference.

[MakisH]

@davidscn is this ready for reviewing?

[davidscn]

Yes

[MakisH]

A few notes:

• Don't forget the opening and closing quotes in the alert contents.
• In the "Get the adapter", I moved the hidden advanced "building in production" step in a subsection, because I could not make the <details> node work. It was broken before. Apparently, the same tricks from GitHub do not apply here.
• I changed "${PATH}:/path/to/dealii/adapter/elasticity" to "/path/to/dealii/adapter/elasticity:${PATH}" (prepending instead of appending, i.e. search first our custom path) (FYI)
• Have you tried directly inserting the equations with $$ equation $$ in adapter-dealii-solver-details.md?
• In the file adapter-dealii-coupling-meshes.md there is a todo [Add link to other Doc page].

Feel free to address as many of these points as you want and merge.

[davidscn]

Thanks!

Have you tried directly inserting the equations with $$ equation $$ in adapter-dealii-solver-details.md?

No, I have not, the formatting is currently nice and for me it is low-priority to change it.

In the file adapter-dealii-coupling-meshes.md there is a todo [Add link to other Doc page].

Will fix it.