Fixes#9797.
Clicking on the unread count badge on the right sidebar did not
narrow the selected pm/group-pm. This commit moves the count div
inside selectable_sidebar_block. Also uses flexbox instead of
inline-blocks for user presences selectable_sidebar_block.
For the "GROUP PMs" part of the right sidebar, we now have
accurate hrefs when you hover over the groups or right-click
to copy links or open links in new tabs.
Show up to 10 of your recent group PM conversations in the right
sidebar. Clicking on the links narrows to the huddle and opens the
compose box for the huddle. The green circles have opacity
proportional to the number of users present in the huddle.
This is feature flagged to staging only.
Some of this code was written by Allen before commits were squashed.
Known issue: unread counts disappear on certain refresh events.
(imported from commit 3b44665150ba20594d8b0295cb30df03601c1d52)
Shubham Padia
Cynthia Lin
LuisFSilva
adnrs96
Steve Howell
Zev Benjamin
Steve Howell