[py3] ensure AjaxController return bytes
publish() must return bytes, when the @ajaxfunc decorated method return None, this raised:
TypeError: You cannot set Response.body to a text object (use Response.text)
# -*- 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 schema"""