Adding webpages to tudat-space (from legacy content)

[FilippoOggionni]

There were a number of pages on tudat-space which were only in the "idea" phase, i.e., they only had a title. For now, I removed them, because they did not look good, but I will note them down here so we can keep track of them. Please let me know which one you would like to see on the tudat-space at some point in the future and which one can be discarded.

• Contributing to tudat-space (I think this can be solved by adding some information to this page)

• Roadmap for tudat-space (probably better to add it here)

• Visualization of results (probably better to add an extra page in this directory)

• This stuff (previously on the main page):

  • Indices and tables:

       * :ref: `genindex`
       * :ref:`modindex`
       * :ref:`search`

[FilippoOggionni]

Closing this because all the content has gone into various issues, see #54 for overview.