[doc] Update cubicweb-ctl page about how to run an instance
* remove mention of start/stop/restart/status commands that do not exist anymore
* briefly mention the "pyramid" and point to respective documentation page
* mention that a WSGI server should be used in production
.. _defaults_module:
:mod:`cubicweb.pyramid.defaults`
--------------------------------
.. automodule:: cubicweb.pyramid.defaults
.. autofunction:: includeme