CI failures unrelated, it's because of me being badly rebased

Fix CSS style typings

I won't be able to land this one, feel free to commandeer this diff, and restart CI once it's fixed

Similarly to https://phab.comm.dev/D13602#381483, we used a different approach

We used a different approach for the above reason

This was implemented as part of the "CSAT invalidation" project. This diff is obsolete.

Rebase

Refactored code so notif failure no longer fails the whole message handling. Replacing FID extraction with DDB value is handled in the next diff

Filter out keyservers

Nice!

CI fails are unrelated, I'd need to rebase again

Nice, good to know that they deprecated DDB table in favor of S3-hosted lockfile.

Add STREAM support

In D15343#422322, @ashoat wrote:

What would it take to add Chrome web support?

Rebase, removed leftovers

Rebase, follow ID convention

Renames and rebase, removed leftovers

Renames and rebase

Renames and rebase

Renames and rebase