By the same logic as the previous patch.
This exposed an apparent bug, where we are sorting by the version field
of the blueprint in the change objects, but these were never
(un)marshalled, so would always be set to zero in the past.
Remove the no-op sorting for now, as it never had an effect, and
put a note whether we should instantiate the blueprint in the change
object somehow.
Signed-off-by: Tom Gundersen <teg@jklm.no>