Jinja2 templates help separate the logic related to the template from
the generation of the data. The python code becomes much clearer as a
result.
As an added bonus, we can use a single template file for both controls
and properties.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>