I see Comment Notifications in Summary form

(User Story, To be Fixed , Priority: Medium, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Notifications
Summary: That is, all of the new Comments in a single Space should get rolled up into a single visible Notification, whose header should be something like "14 new comments in Foo", and whose body shows as "3 comments on Bar; 5 comments on Floob", etc.
Eventually, we probably want to let you unroll these summaries right there, and get to the meat of each comment, but that can wait until later.