[config] fix the load_site_cubicweb() method for to 'new-style' cubes (closes #16059402)
We first try to load the site_cubicweb module from the cubicweb_<cube> package,
and if it fails, revert back to old cube path.
.. _ajax:
Ajax
----
CubicWeb provides a few helpers to facilitate *javascript <-> python* communications.
You can, for instance, register some python functions that will become
callable from javascript through ajax calls. All the ajax URLs are handled
by the :class:`cubicweb.web.views.ajaxcontroller.AjaxController` controller.
.. automodule:: cubicweb.web.views.ajaxcontroller