SSL By Default

This addresses #31 and adds HTTPS everywhere by default. Related states were added to margarita in https://github.com/caktus/margarita/commit/708e646bac93de5e293aa5da58f112d6bdf20d08
There is also some slight reorganization breaking up the project/web.sls into pieces for the app (source, venv, supervisor) and the nginx configuration.