* Switch back to a generated version of the documentation.

Dependencies for the documentation generation have been added to poetry.
As Pelican is a Python tool, that makes sense.

Note to myself: To generate the doc with ccb.py we *need* to be inside
                the Python virtual env generated by Poetry. Instead of
		relying of a default one, provide one of our own
		(coriolis-venv) and make poetry run in it.

* Top builder.py now generated the doc.

* Forgot to remove generated PDFs in the documentation.

* A bit of cleanup on the README.rst

* Forgot the logo. Try to use code-block directive in README.

* Still typo in the logo path.

* One more trial at setting the image position.

* OK. That's enough for the logo.

* Problems with code-block.

* Voila!

* Build inside a venv and use poetry in the top level Makefile.

* Remove doxygen generated docs.

* More doc cleanup in oroshi.