Notification Rendering no longer works appropriately
Summary: This design bug isn't user-visible -- yet -- but shows up as a horrible hack in the Client's NotificationsPage. CommentNotifier shows the bug clearly. The issue is that we're rendering the link to the Comment deep in the server, inside CommentNotifier, but we really should be doing so client-side.
I believe the owner/space/thing info should be passed as part of the NotificationInfo, and the link rendered client-side, instead of that happening in the server. Currently, it's horribly coupled.