fixed duplication of adding an invitee to an event via the accept link in invitation email, tested and passing. code cleaned up
fixed some merge issues with the master branch. everything up to date
Adding first payment feature
Merge branch 'user-and-event' of https://github.com/willhall88/Angry-Kitty into particpanting-payments
sends celebratory email when all participants have paid
cleaning up, extracted mailers in charges controller to method in model