Issue 81

Fix #81 

Run this code after deployment:

    import GlobalUtilities as tools
    import DataModels as models
    s = models.Settings.query().fetch(1)[0]
    from google.appengine.ext import ndb, blobstore, deferred

    for i in models.Individual.query():
      deferred.defer(tools.defer.donation_total, i.team, i.key, _queue="backend")