Pierre-Yves David <pierre-yves.david@logilab.fr> [Tue, 10 May 2011 07:57:52 +0200] rev 7348
[web server] #1642893 issue a 403 instead of a 500 on Unauthorized exception
To do so, we allow an arbitrary code to be passed to ``error_handler``. Default
error code is still 500.