[test] drop CubicWebConfigurationWithLegacyCubesTC
This is used to test legacy cube import which is planned for removal
in cubicweb 3.27, so drop the code.
.. _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