Toby Zerner 470f99ca8d Rework notifications architecture ...

- The recipient(s) are the concern of the notifier/sender, not the
notification itself
- Allow “retraction” of notifications (e.g. if a discussion is
stickied, but then it is unstickied)
- Misc. cleanup

2015-05-14 22:41:08 +09:30

..

core

Rework notifications architecture

2015-05-14 22:41:08 +09:30