Sphinx.set_translator is a Sphinx 1.3 API, and we only require Sphinx 1.2 at this point. Replace the use of set_translator with explicitly setting the ``html_translator_class`` config setting.
Sphinx.set_translator is a Sphinx 1.3 API, and we only require Sphinx 1.2 at this point. Replace the use of set_translator with explicitly setting the ``html_translator_class`` config setting.