Taming wild PM notifications

[mcwumbly (Dave McClure)]

I suggest.

1. We roll up notification so you only get a single green notification for all messages in a PM. As new messages come in we roll them up. Display something like “(4) my awesome private convo” in the notification.

2. Change the clearing logic, so the notification goes away as soon as you visit the PM regardless of the number of messages you have left to read on that private conversation.

Any reason not to do (1) and (2) for notifcations from any topic?

(I could swear there was a thread about how notifications like these should be merged)