Comment 0 for bug 799912

After branches for bug 772754 land. From Danilo: """There is a potential for a UI race condition that the code is not designed to handle (on purpose, due to my laziness): if a team you can unsubscribe is subscribed, and you are able to quickly click unsubscribe, then before the animation completes click on 'subscribe someone else', find that same team, and subscribe them again, provided subscribing succeeds after the end of the unsub animation, the just unsubscribed, then subscribed team might not show up in the list, and you might hit an error message from stopSubscriberActivity saying something how addSubscriber needs to be called first; I tried to hit this race condition, but I just couldn't be fast enough on qastaging or localhost."""