Aha! Screw you JSON headaches! I have banished thee to the realm of impossibility, and turn to the promised land of SQLite3, where the sky is blue and the grass long.
...or something. Rewrite AddUser() to insert into database, frontend soon.
SQLite3 should make future features like multiple publishers and user permissions _much_ easier to manage - JSON in Go is a pain sometimes. Updated godep file as required.