Issue running with sphinx 1.5.3 with cloudsp_theme 1.8.3.

Created originally on Bitbucket by Anonymous

It seems that sphinx 1.5.3 add a new warning when attempting to replace the table element. Simply creating a new sphinx project with quick-start and adding the cloud_sptheme.ext.table_styling extension to its conf.py will generate a warning. This disallow sphinx to run with the -W option:

#!bash
$> SPHINXOPTS=-W make html
Running Sphinx v1.5.3

Warning, treated as error:
WARNING: while setting up extension cloud_sptheme.ext.table_styling: directive 'table' is already registered, it will be overridden