[pkg] add python3 only pypi specifiers
This is only for pypi statistics purposes.
Also add 'Programming Language :: Python', looks obvious but seems to be sane to have this as well.
.. -*- coding: utf-8 -*-
Server Architecture
-------------------
.. image:: images/server-class-diagram.png
`Diagramme ArgoUML`_
[FIXME]
Make a downloadable source of zargo file.
.. _`Diagramme ArgoUML`: cubicweb.zargo