fixed typo of missing parens in flash message
initial implementation of creating customers for subscriptions
saved newly recorded vcr cassettes
refactored stripe wrapper to be more DRY
checkpoint with working payments recording but without reference ID or date
implemented feature test for admin to view payments; and some schema modifications to rename payment fields
implemented account locking and related tests
added feature test for locked account login
pulling out non-working request stub code into a separate portion of the billing test
fixed based on code review comments
Merge pull request #14 from yev2000/subscriptions

Subscription implementation ready for master after addressing code review comments.