[web] implement cross origin resource sharing (CORS) (closes #2491768)
Partial implementation that is enough to get started but leaves out
some of the advanced features like caching and non-simple methods
and headers.
.. -*- coding: utf-8 -*-
Dernières modifications
-----------------------
* la table des `derniers changements`_ fournit un exemple d'utilisation de RQL
pour récupérer les derniers changements ayant eu lieu sur ce site.
.. _`derniers changements`: view?rql=Any+M%2CX+WHERE+X+modification_date+M+ORDERBY+M+DESC+LIMIT+30