- vertically center date and messages separators in threads
- remove notifications in DM and livechat
- order mail demo data so that messages appear ordered (they are ordered by id)
- make sure that DM are pinned (they weren't on the receiver side)
- don't display DM until a message has been sent
- validate message body
- undo snackbar fine tuning
- fix Firefox scroll bug on sidebar rendering (the scroll position was often
lost when the sidebar was re-rendered, seemingly because the width of the
thread changed for a brief moment)
Aaron Bohy
c51af45384