[views] Respond with 400 Bad Request in case of validation error in ajax request
Previously, we raised a plain RemoteCallFailed without a status code, in which
case it defaults to "500 Internal Server Error". Now, for validation
errors, we issue a 400 Bad Request since these are clearly client errors.
.. _defaults_module:
:mod:`cubicweb.pyramid.defaults`
--------------------------------
.. automodule:: cubicweb.pyramid.defaults
.. autofunction:: includeme