Api v2

New names and organization for version 2 of the opentree api.

These changes depend on some recent db structural changes introduced by taxomachine (already merged to master) which will necessitate a db update for oti. I have pushed an updated database to devapi and re-indexed the studies there as well.

@jar398, @jimallman, would you review this?  
Ok. I have made issue #27 to remove this property. Currently, I don't think it matters much if it's there, and the goal of this pull request is to get the new api services up and working this week. So it seems like now that we know what to do, we can deal with this later?