[debian] Update description of cubicweb-ctl* packages
init scripts are no longer shipped.
Avoid mentionning "start" and "stop" command which should not be used in
production environments.
.. _session_module:
:mod:`cubicweb.pyramid.session`
-------------------------------
.. automodule:: cubicweb.pyramid.session
.. autofunction:: includeme
.. autofunction:: CWSessionFactory