Added baseline for sphinx documentation and on2FACode event

The docs are still very WIP, but they should be functional. Just
execute `make html` in the docs folder, and you should be able to
navigate to `/docs/_build/html` and view it in your browser

docs/_templates/sidebar.html

@@ -0,0 +1,13 @@
+<h3>
+    <a href="{{ pathto(master_doc) }}">{{ _(project) }}</a>
+</h3>
+
+<p>
+    <a class="github-button" href="https://github.com/carpedm20/fbchat" data-size="large" data-show-count="true" aria-label="Star carpedm20/fbchat on GitHub">Star</a>
+</p>
+
+<p>
+    {{ _(shorttitle) }}
+</p>
+
+{{ toctree() }}