[ReST] Implement a rql-table reST directive. Closes #3252856 allowing to call table or derivated view specify headers / cellvids. Also, rql may be split accross several lines which greatly improve readability.

# -*- 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 entity's classes"""