[devtools] make return value of get_response_header(raw=True) consistent wrt get_header(raw=True)
i.e. get_response_header(raw=True) now returns the first element of the list rather
than the list itself.
# 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.
"""