Closes #819 (closed)

Summary

Unread messages were not appearing top of the messenger list which could lead to lost conversations.

Reproduce

1. Get 3 browsers open.
2. Log in to 3 seperate accounts.
3. All message your main user.
4. Load your conversation list on the main user, and click the top one.
5. Close the messenger popup and re-open it. - you should observe that the read user is below the unread.
6. Experiment, and make sure chronological order is respected, but unread conversations are top.

added scoped labels

mentioned in issue #924 (closed)

closed