Previously, at screen widths between 425px and 620px, hovering over
Inbox description caused misalignment of "Inbox" title and the icon.
This commit resolves it by defining the padding-top in em instead of
pixels.
This commit adds support to render long descriptions
on hovering over the narrow description.
Hides the title and associated privacy icon below
a particular screen to create more room to show
the extended description.
Sets a fixed width in case of bigger screens
for word-wrap to work.
Fixes#14729.
Fixes part of #30918.
We don't need `align-self: baseline;` for `fa-envelope` set in
`message_view_header` since this is a different icon and it appears
better without it like other icons.
We also don't need the explicit font-size for switching b/w 14px and
16px mode since `zulip-icon` class takes care of that by default.
Adds description in views styled like stream descriptions also adds a
help center link to the appropriate page at the end of each
description.
Fixes#29769.
