This is a direct conversion of the existing code in subsurfacewebservices
to the different data structures in use here. I did not try to abstract
this out to have both share a common helper because I assume that the
Subsurface web service will pretty quickly become obsolete (together with
the companion app).
Right now this is not hooked up anywhere.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>