Fixed tests failing due to time out of joint.

We were running the tests "in the past," but the Authorize.net sandbox
didn't know that, and it wouldn't let us start a subscription before the
current (real-life current) date. Now we run them far enough in the
future that we won't have to revise these tests for a while.
Capitalize account status and add white space.

https://www.pivotaltracker.com/story/show/67702774
upgrade ruby version
Force Ruby upgrade on Heroku.