Setup to work against new node.js based gatekeeper.
Remove internal vs external handling of APIs.

If this functionality is needed, I think it can be cleaned up with either
HAProxy 1.5 or the new nodejs proxy.
Move SSL termination to haproxy now that we're using 1.5.
Remove sample backend reference.
Add production config file for the gatekeeper.
Update production mongodb server.
Some demo deployment setup.
Bump capistrano_nrel_ext.
Deploy to both web servers.
Adjust demo routing paths.
Fix NREL demo routing.
Fix the NREL demo routing for real this time (I hope).
Adjust database server hosts.
Configure elasticsearch hosts.
Bump capistrano_nrel_ext to fix node install update issues.
Let's try keeping the gatekeeper as a submodule to simplify development.
Enable git submodules for deployments.
Set default port and target server.
Bump gatekeeper to fix geoip data directory settings.
Add routing for torquebox backstage.