Previously, the send_custom_email code path leaked files in paths that
were not `.gitignored`, under templates/zerver/emails.
This became problematic when we added automated tests for this code
path, as it meant we leaked these files every time `test-backend` ran.
Fix this by ensuring all the files we generate are in this special
subdirectory.
The alt text of the leading images were displayed as preview
content in inbox by email clients like gmail. Since the leading
images were used mostly for decoration this made the preview
content gibberish. It's fine to set the alt attributes to empty
from accessibility point of view since the old alt attributes
did't added any meaningful information.
Hopefully this does a better job of spurring people to action, and also
suggests a self-service fix if they don't (i.e. contacting the person that
invited them).
Making sender name go in-line with message body only if
the html starts with <p> tag since it won't look good
if the message starts with a code snippet, ul, etc.
If message starts with p tag we can safely assume that
it can go in-line with sender name.
This is a dramatic redesign of the look and feel of our missed-message
emails, designed to decrease the feeling of clutter and just provide
the content users care about in a clear, visible fashion.
This cleans up the reply_warning feature in favor of a more coherent
explanation of whether or not one can reply.
(Also, critically, it now advertises the ability to enable
missed-message email replies with some administrative configuration
work.)
The antialiasing decisions we made for the webapp should be constant
over the entire page, not limited to particular subsections or themes.
If we wanted antialiasing, we should do it on the entire page, not
individual random widgets. But it's not clear we actually want to do
it on the entire page. The `-moz-osx-font-smoothing: grayscale`
setting now happens by default in OSX Mojave (40% world market share
right now and growing), so there's no reason to override it. And
without retina displays, generally, subpixel rendering provides better
results than antialiasing (which overrides subpixel rendering).
Thanks to Anders Kaseorg for advice on this issue.
Refactoring in 4e1c058 was not correct since recipient_block
and message_content checked for if not condition while
recipient_header checked for if.
The naming of classes in 6077a33 was also not correct
semantically.
It looked like I got some hex values wrong during the
hsl to hex conversions. I used the built in vscode color
converter for this so not really sure how this happened.
The colors are now equalent to the original hex colors
before the conversion to hsl was made in
5869cc3b6d
As part of this change, we port into the .messages class the work in
4e8e7348da to change overflow-y to auto,
not scroll (skipping that would result in a regression).
Note that a pretty common use case for this is a realm admin sending this to
everyone after an import from HipChat or Slack. So this adds the realm_name
to the title (so that there is something they might recognize) and kept the
wording generic enough to accommodate the user not having clicked anything
to get this email.
Also strengthens the tests a bit to better test the complicated template
logic.