Solidify v1 API and version the API

[artasparks]

Related to #31, we should solidify the v1 API and make any API choices before we go into Beta. @duckpunch is currently working on this.

[brilee]

versioning is already accomplished here: https://github.com/usgo/online-ratings/blob/master/web/app/__init__.py#L39. Agree with solidifying api design choices.

[duckpunch]

Agree.

A suggested order of operations:

1. Go back and forth on semantics, using the docs as the vehicle for discussion. Don't implement anything in code.
2. Implement the changes after the first step is done.

[artasparks]

@duckpunch -- SGTM.

[brilee]

Things that I need to fix, as noted in the docs PR:

• move auth tokens to headers, instead of queryparams
• update game server UI's URL to include the server name, rather than the server ID, to make the server's name more discoverable
• rename or remove the rated field of the Game model. (It was meant to be used to mark whether a game had yet been processed by the ratings algorithm.)
• remove rated from the Game api - it should not be submitted by the server; it should merely be initialized as False on our end.

[brilee]

(I assigned this issue to myself, but actually, now that I think about it - these are some reasonably easy tasks for somebody new to tackle. It should be a good way to get oriented in the codebase. Let me know if somebody wants to do this.)