This is just enough of a quick fix to work with a stock Zulip 1.6
server. We should really also make this robust to arbitrary input
from the remote Zulip server, even though it'll be a little tedious.
This deserves a fact-check to make sure I haven't simplified
anything past what's true! Note in particular the TODO comments.
Especially in particular, I took out references to the .zip installer
for macOS and the .deb installer for Linux. I couldn't tell in what
situation we'd really want to steer a user toward them (and wouldn't
recommend instead either the .dmg installer, or the apt or AppImage
instructions, respectively), so taking them out simplifies the
instructions and avoids presenting the user with a choice they have no
context for making. But if there is such a situation, then we can put
them back.
This adds the perfectScrollbar to the right side and theoretically
updates it any time a piece of code interacts with the sidebar and
updates the counts of users displayed in it.
This shows the download instructions only selectively based on
whether the device has download instructions for it. This means
currently it shows the page for Windows, Mac, and Linux.
The list needs to be set to use perfectScrollbar so that it can
scroll due to the fact that it resides within another instance of
perfectScrollbar.
Fixes: #6351.
The popovers for the message down chevron and left sidebar had
strange side padding and non-uniform padding between the top and
bottom. This changes them to all have the same padding as the
nav `#gear_menu`; none on the sides and 5px on the top and bottom.
This moves the chevron arrow and the "All Streams" text over 10px
so that it will be inline with the hashes below and not be up
against the edge of the screen in some collapsed modes.
The issue before was that the left sidebar would become too tall for
the screen because the standard header that has “STREAMS” and buttons
is 20px tall, and this one is 30px tall. This makes it much shorter,
changes the text to be the same style as the “STREAMS” text (medium
grey, uppercase text).
The markup is then fixed to be significantly less verbose than before —
changing a list to just a simple link.
This combines two different selections of the
`#stream-filters-container` into one chained selection and writes a
comment on how it is possible due to the return value of `.css`.
