GeezerVison

This is a replacement for python#9337.

* Using conf.py to disable smartquotes through Sphinx instead of using docutils.conf
* Disable smartquotes for Japanese, French and Traditional Chinese translations

See:
* Suggesting to use conf.py: https://mail.python.org/pipermail/doc-sig/2018-September/004084.html
* Original smartquotes issue in ja translations: https://bugs.python.org/issue31793
* Disabling for ja: python#4006
* Smartquotes issue in fr: python/python-docs-fr#303
* Smartquotes issue in zh_TW: https://mail.python.org/pipermail/doc-sig/2018-August/004079.html

Using smartquotes_excludes option in conf.py requires Sphinx 1.6.6 or more.

See: http://www.sphinx-doc.org/en/1.7/config.html#confval-smartquotes_excludes

….yml to 1.7

Disabling smartquotes in conf.py with Sphinx is available in Sphinx 1.7
thus updating the version requirements for building docs on CI.