REF,ENH Use jupyter-book for the rendered website

[mvdoc]

This PR adds a major refactoring of the rendered tutorials. They are now rendered with jupyter-book, improving the reading flow.

For maintenance, notebooks are edited and added directly in the notebooks folder as ipynb files. We don't need to write scripts and convert them to notebooks anymore. This reduces the number of moving parts and should make it easier to maintain the tutorials.

Tasks

• Set up jupyter-book
• Add references
• Convert rst to markdown
• Fix scripts to use bibtex references
• Fix Makefile to convert scripts and build book in one go
• Figure out better file structure
• Update logo
• Check warnings in rendered notebooks
• Check if I can render the progress bar better