This adds a slide class that specifies that the JS actions for sliding
up and down sections is the desired behavior, along with a bit of CSS
to help display correctly in the case of not being a sliding section.
This removes the underline on hover and changes the text to get to the
index.
This also changes it to an <h2> tag so that it will be more inline
with the styling of the rest of the sections, but without the
down chevron.
This makes the /help/ sidebar more discoverable at windows less
than 1000px in width because it makes it stick out a bit when it
is closed with the hamburger menu at the top.
Fixes: #6038.
Apparently, the filters implementation was doing some sort of strange
caching, where you would need to restart the server in order to
refresh for changes to the markdown content.
We fix this by switching to just calling the render_markdown_path
function from Jinja2.
Fixes#5974.
This redesigns the /help/ page sets to be a single page app that uses
history.pushState to work the same as the old app.
The big new feature is that now we have the index in a nicely designed
left sidebar.
This styles inline images, the markdown page as a whole, and the
notification buttons to be CSS rather than images.
[Tweaked by tabbott to temporarily remove the Yantramanov font, since
we should be committing that to the repo so Zulip works correctly without
Internet access]