Port urlmap / downlog formats from AProx

[jdcasey]

These are special formats of the output provided from the ResolveOps.resolveRepositoryContents() call. They aren't quite template-ready since there's a URL-generation component to their logic. It should be possible to make this URL generator an interface, then provide it to a method like ResolveOps.formatRepositoryContents() with a template key passed in.