tourney import only (WIP)

REST API done for this part, still need to write UI
@garsh0p @jhertz 

no auth integration yet; need to rebase onto master.

(other changes are still on the other branch, which I'll rebase onto this one at some point)
I did that originally, but I think it should really be a `POST` to `/<region>/tournament` instead of `tournaments` (since you're posting _a_ tournament)... whatever, `POST` `/<region>/tournaments` is fine