Docstring for the Pelican settings.

To silence pydocstyle and so I don't forget what's the difference
between the 2 files.

pelicanconf.py

 # -*- coding: utf-8 -*- #
 # pylint: disable=import-error
+"""Pelican configuration."""
 from __future__ import unicode_literals
 
 import seafoam

publishconf.py

 # -*- coding: utf-8 -*- #
+"""Pelican configuration for publishing to the production site."""
 from __future__ import unicode_literals
 
 # This file is only used if you explicitly specify it as your config file.