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 think the url for this resource should be a POST to /<region>/tournaments. POST implies new anyway, so we should make use of the HTTP verbs as much as possible.