This is somewhat experimental and we may need to work on the condition
when it shows up (or move it elsewhere).
Also, maybe it should say "Today/Yesterday" for times super close to
now -- the main issue with doing this is whether it needs to update
without your reloading the page to avoid being super confusing.
(imported from commit e29faf30c83b9574e5d233213f42a24175f9a616)
It causes problems when [un]narrowing, and we already do the rest of formatting
on the server side.
This reverts commit 90af0192b37bbebbf56d5e7c50f182485ddbca10.
This reverts commit df7e355648d2c4d6319de049933547ed96402fd8.
(imported from commit 99d87f0826ec2f49741f86fad6524ed93e76723f)
Tim Abbott
Keegan McAllister