This starts using webassets for the site-icons.css file inside the base
template so that a cache-busting "version" string is added after the
filename as a query variable (as was already being done with the other
CSS and JS files).
It also creates a new service that's triggered by a "path changed" event
on site-icons.css, which causes gunicorn to reload. This should mean
that whenever the site-icons.css file is updated by the cronjob that
generates it, gunicorn will automatically reload and update the
cache-busting string for the CSS file, causing users' browsers to update
to the newest version.
Deimos
89c7c13be2