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?  
Sounds good. Meanwhile, there are two copies of the "Tippery N., 2011" study in oti. You can see them in [the main study-list page](http://devtree.opentreeoflife.org/curator) by searching for its DOI: "10.1600/036364411X605092"