Add zathura with some initial config, colour scheme is currently
incomplete but placeholder comments in place for required keys.
Don't autostart twinkle on work machines, some issue with detected
ALSA source/sink.
Change opacity of desktop components to that floating / pop-up windows
are translucent, and base windows are opaque.
Add zellij back (with config), but not starting by default. Add zellij
config directory to rsync-local-config script.
Evie Litherland-Smith