Upgrade documentation to the pydata_sphinx_theme

[kif]

close #2017

[kif]

Traceback (most recent call last):
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/sphinx/events.py", line 97, in emit
    results.append(listener.handler(self.app, *args))
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/pydata_sphinx_theme/__init__.py", line 192, in update_and_remove_templates
    context[section] = utils._update_and_remove_templates(
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/pydata_sphinx_theme/utils.py", line 146, in _update_and_remove_templates
    rendered = app.builder.templates.render(template, ctx)
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/sphinx/jinja2glue.py", line 200, in render
    return self.environment.get_template(template).render(context)
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/jinja2/environment.py", line 1016, in get_template
    return self._load_template(name, globals)
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/jinja2/environment.py", line 975, in _load_template
    template = self.loader.load(self, name, self.make_globals(globals))
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/jinja2/loaders.py", line 126, in load
    source, filename, uptodate = self.get_source(environment, name)
  File "/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/sphinx/jinja2glue.py", line 222, in get_source
    raise TemplateNotFound(msg)
jinja2.exceptions.TemplateNotFound: 'version.html' not found in ['/home/docs/checkouts/readthedocs.org/user_builds/pyfai/checkouts/2031/doc/source/_templates', '/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/pydata_sphinx_theme/theme/pydata_sphinx_theme/components', '/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/pydata_sphinx_theme/theme/pydata_sphinx_theme', '/home/docs/checkouts/readthedocs.org/user_builds/pyfai/envs/2031/lib/python3.9/site-packages/sphinx/themes/basic']

The above exception was the direct cause of the following exception: