Currently using a custom rule for system fonts. This change also adds a
missing new class to the custom rule to cover Markdown-generated content
like e.g. comments.
The default recipe deploys the gitea binary, generates a config file and
our custom Kosmos label set. The service runs as a Systemd unit.
The pg_db recipe needs to run on the primary PostgreSQL (currently
andromeda).
The backup recipe is empty for now
Refs #147