- Update Enterprise & Partnership agreement (EN, FR)
- Update legal page index: hide outdated agreements, replace
with a link to an archive of the old PDFs.
- Add icons for missing files, to make index table layout more consistent
- Add `text-justify` on HTML versions of contracts, for consistency with
the PDF versions.
- Fix compatibility of PDF generation with recent sphinx versions
(\sphinxmaketitle instead of \maketitle)
- Re-add NL PDF building, still needs to be updated like all others
Backport of 5b80ed551c from 13.0
