Docs packages and conf.py are not up-to-date

[jputrino]

Update docs/conf.py and requirements.docs.txt:

# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
    'sphinx.ext.intersphinx',
    'sphinx.ext.todo',
    'sphinx.ext.coverage',
    'sphinx.ext.ifconfig',
    'sphinx.ext.doctest',
    'sphinxjp.themes.basicstrap',
    'cloud_sptheme.ext.table_styling',
]

awscli
git+https://github.com/f5devcentral/f5-sphinx-theme@master
sphinx>=1.6.2
recommonmark
sphinxjp.themes.basicstrap
cloud_sptheme

[jputrino]

add the |mctlr-long| and |mctlr| substitutions