[sources] Simplify source's init method
Only call it when enabled instead of giving a boolean flag indicating whether it
is or not (which were not correctly considered).
.. _profile_module:
:mod:`cubicweb.pyramid.profile`
===============================
.. automodule:: cubicweb.pyramid.profile
Views
-----
.. autofunction:: ping
.. autofunction:: cnx
WSGI
----
.. autofunction:: wsgi_profile