[Checkins] [zopefoundation/Zope] ca16fe: Revise section "XML-RPC" (#614)

[Jürgen Gmach]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: ca16fe75a45ba35600fb2a9de638c62a216d0ef1
      https://github.com/zopefoundation/Zope/commit/ca16fe75a45ba35600fb2a9de638c62a216d0ef1
  Author: Jürgen Gmach <juergen.gmach at googlemail.com>
  Date:   2019-05-10 (Fri, 10 May 2019)

  Changed paths:
    M docs/zdgbook/ObjectPublishing.rst

  Log Message:
  -----------
  Revise section "XML-RPC" (#614)

- improve formatting
- update syntax and imports for Python 3
- remove paragraph about DTML
- remove wrong information about missing basic authentication support
- remove wrong comment that "None" is no valid return value via XML-RPC
(as Zope enables "allow_none")

modified:   docs/zdgbook/ObjectPublishing.rst