This is still not functional, because it involves a LOT of changes to
the basic structure of the project. Some of the main changes can be seen
in the CHANGELOG.md file, if you're interested, but it boils down to
simplifying the logic of plugins (no more activation/deactivation
shenanigans), more robust typing and use of schemas (pydantic) to
avoid inconsistencies and user errors.
Update RDFlib to 6.1.1 (removed rdflib-jsonld, as it is deprecated)
Bumped minimum python version: 3.7 (as a result of RDFLIB 6)
Added ProxyFix to run behind nginx (Added --no-proxy to run without the fix)
Replaced http media links to protocol-agnostic links in playground
Enable CORS (via --enable-cors)
Update old urls (replaced *.cluster.gsi.dit.upm.es with *.gsi.upm.es)
