Overview of changes:
* Fixed quoting when setting $SATURNIN_CONF_PATH
* Replaced complete.bash with skeletal version of itself
With reasonable version of mkit, the skeleton can be readily used
without any modifications.
* Applied first attempt to be more conformant with XDG standards
Saturnin-demo now uses XDG paths for cache, local data and config
data and does it in such a way that respects these values from
environment variables as prescribed by current XDG.
Note that not all paths described by XDG are used.
* Simplified Saturnin's mkit tokens
Another step to increase usability of this demo with as little
modifications as possible.
Turns out this is not good practice; the tokens are only used within the
process of building the application so there's no need to qualify them.
Having them qualified in fact adds unnecessary spam when syncing with
the template.