Added $local_quiet flag to load_json()
Added $local_quiet flag to load_json()

This is to avoid spurious "could not find file" messages when this
will be caught and notified by the caller.

tzz/design-center,tzz/design-center,tzz/design-center,bdurrow/design-center,bdurrow/design-center,tzz/design-center,bdurrow/design-center,bdurrow/design-center