changes to pricing page structure
upgrade directly from free to any paid plan
tests for medium-to-large upgrade - failing!
oops, forgot modal template
pricing page links
upgrade the subscription in recurly

Currently we're missing error handling and handling of more than one
subscription per account.

Refactoring into the subscription model is advised.
better error handling in subscription change endpoint; severe reindentation
refactored plan upgrade/downgrade path into User and Subscription models
plan upgrade modal calls serverside api
Cleaned up upgrade modal in the error case.
Slightly more useful logging.
fix pricing test
Fix signup test
integration test for downgrading
Merge branch '20130708-upgrade'

Conflicts:
	test/integration/api.coffee