Show user their IP as we see it (for debugging, might keep around)
Base template for shared layout, html boilerplate
Add logging to debug Tor check on Heroku
Fix old variable name in template that made Tor check fail

Remove debugging messages from last commit.
Redirect to hidden service if using Tor

Otherwise, warn user about anonymity risk but offer the option to use
a clearnet proxy.
Re-arrange text so advice to use Tor is first, fix onion.to URL