Goodie Auto-Templating.

This approximates the way things work on the production back-end, without requiring
all of the infrastructure.
The problem I had here was with the template completion happening on the trip back through from the proxied request.  I couldn't find a nice way to do this.

I mentioned this to @russellholt, as well.  I'd like to more unify how these work, but I think it requires some extra pieces on which we didn't want to spend time just yet.  Certainly your Spice implementation is the front-runner for how to proceed. :grin: