Log which missedmessage events are received

(imported from commit b0b662e97fd9199644c7cf1ac7bc11e6c4d25376)

zephyr/management/commands/send_missedmessage_reminders.py

@@ -19,6 +19,7 @@ class Command(BaseCommand):
             by_recipient = defaultdict(list)
 
             for event in missed_events:
+                print "Received missed message event: %s" % (event,)
                 by_recipient[event['user_profile_id']].append(event)
 
             for user_profile_id, events in by_recipient.items():