Switch to webapp2 sessions.
Model now uses NDB and has a more fleshed out example.
Updated deploy submodule.
Switched to jinja2 built in library for templating.
Removed unused submodules and associated files.
Updated deploy submodule. Also updated the readme and config to match.
Removed unused static files.
Added a `skip_files` section to the app.yaml to speed up deploys.