Removes reference to icon (previously a magnifying glass) in
text for filtering streams and replaces it with direction
for clicking on the STREAMS header in the left sidebar.
This better matches the title of the page and more generally our
conventions around naming /help/ articles. We include a redirect
because this is referenced from Welcome Bot messages, and we
definitely don't want those links to break.
Go to Recent Topics on "#", no hash and "#recent_topics".
Go to Recent Topics as the last destination for escape key.
Map `a` key to All messages and change its hash to
`#all_messages`.
Lauryn Menard
Alya Abbott
Tim Abbott
Aman Agrawal
Rishi Gupta