Carlos Garnacho authored Jun 14, 2020 and Felipe Borges committed Sep 14, 2020

The SparqlConnection constructor API changed, since Boxes does
purely readonly use of Tracker, it's most convenient to use the bus
connection here.

Also specify the tracker:Software graph for queries, as ISO image data
will be written to it.

As all versions of tracker 3.x are guaranteed to have the osinfo:language,
we don't need the fallback queries either.