Find an alternative to TOC for the table of contents
It's buggy now, and not maintained anymore it seems. We run into this error when trying to use it:
ERROR Cannot load plugin `toc` log.py:96
cannot import name 'python_2_unicode_compatible'
from 'pelican.utils' (/usr/local/lib/python3.7/sit
e-packages/pelican/utils.py)
We could try to find an alternative instead, or fix it ourselves if we have the energy.