Blacklist the topics-related notification events for mixpanel.
Created by: lerouxb
Fixes https://github.com/troupe/gitter-webapp/issues/2378
Btw, what's the difference between topics_notification_email and topic_notification_email?
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: lerouxb
Fixes https://github.com/troupe/gitter-webapp/issues/2378
Btw, what's the difference between topics_notification_email and topic_notification_email?