Starting to revamp build into Maven multimodule project.
Consolidated a bunch of stuff into the main server.

The main server now runs an embedded Jetty, and serves up all the website
stuffs therefrom.

I also translated all of the webapp code into Scala (and the server will be
Scala as well).
A whole bunch of config jockeying and injectery.
Regenerated Depot records, made string columns longer.
Fixed error with var reuse, made less error prone.
Added test mode; auto-create test user therein.
Nix website_url, use shipped Depot.
Use correct port, other niggling fixes.
Added a submodule that builds our gg-client.jar.

Still need to wire up signing it.
Move generated stuffs to target/web.
Serve up generated bits from target/web.
Fixed client niggles; added means to run client.