Load the JS warning bubble in the initial HTML

Loading the JS warning bubble in the initial HTML (it is hidden at first
by the CSS) triggers the loads for the icons right away. Previously, we
were generating the bubble's HTML in JS and then appending it to body,
which triggered the image loads once the element added (and thus,
visible). This caused the bubble to load without the icons at first due
to Tor's general sluggishness.

Doing it this way means the icons will probably already be loaded by the
time the user has read the JS warning and decided to click the link,
which provides a better experience overall.
moved the add authd firewall exemptions from a task to handler to avoid matching multiple conditions.
added firewall rule for the redis worker.
rules has to be in place before the generic drop rule of all of the securedrop users traffic.

added the complain flag to rest of the apparmor profile for testing
Merge pull request #706 from freedomofpress/preload-js-warning-bubble

Load the JS warning bubble in the initial HTML
Merge pull request #707 from dolanjs/move-authd-exemptions-to-handler

changed task for authd fw exemptions to a handler
Merge pull request #708 from dolanjs/redis-fw-rules

added firewall rule for the redis worker.
Merge branch 'develop' into fix-download-unread