Bump gunicorn to 0.17.4
remove the ES hold stuff.  (bug 865432)
ack indexing tasks once indexing is done. (bug 850913)
save lang/region for users (bug 833049)
save region too. clean up a couple other nits.
be friendlier to forms
fix theme lock expiry
api docs overhaul
still not good at this ORM thing
more docs stuff
make notes and URLs a bit more obvious
fix http request string
get apps in test reindexed, since es.hold is gone
sheesh
release theme locks button (bug 864506)
fix theme checkout case where themes in pool < 5
tiny hack to align theme sidebar when MotD is open (bug 863444)
Pass proper sort field down for app queue (bug 851375)