format dollars proper

Change-Id: Ied84652272952a0fe6cb8747467cce56b29760fa
Merge remote-tracking branch 'upstream/2-1-lav' into 2-1-lav
add expiring soon mailer

Change-Id: Ifa0051ed013e6aa53e16ebe9847d00678b302026
add notifications task for expiring cards

Change-Id: Ia173d65427f6be78ea76a8ed0d31f45c4439d738
Rake tasks taskes the num days as param

- default to 7

Change-Id: If3df4da4e77fe20be78f4a57d9afa0729616b24c
Merge pull request #8 from seantaylor/2-1-lav

Expiration notifications