[etwist] use more specific REQUEST_ENTITY_TOO_LARGE instead of BAD_REQUEST
When a request body exceeds the configured limit, return 413 to the
client instead of a generic 400.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s precreate script, executed at instance creation time or when
the cube is added to an existing instance, before the schema is serialized.
This is typically to create groups referenced by the cube'schema.
"""