new image for kcoin jtree #35
closes #35, the story is decent. goes from granola bars to call to action
updates charity payment tally to be a little more reasonable (count the number of votes for each charity_id) and pass its tests
new methods for adding a donation to a purchase ... need to rethink having reference to purchase on donatin and reference to donation on purchase... it is a one to one and this is excessive
new mailer for notifying new users when they sign up
new email subscriber method
working towards paymetns #65, finds all batches that are closed, cleans up a few tests