Changed index.html from "Hello, world" to have basic game selection form.
Added index.css for appropriate formatting. Moved script (for now) to
index.js. Trivial whitespace change in views.py.
Stupid typo in views.py.
CSS on front page, in the process added many, many autogenerated files.
(python manage.py collectstatic). Excluded venv/ in .gitignore.