This provides more flexibility to custom ADR algorithm implementations.
E.g. the device variables can be used to store per-device variables that
might overwrite normal ADR logic.
By selecting a region configuration, devices using the device-profile
will only stick to the selected region configuration, rather than the
configurations provided by the selected region common-name.
This change also renames the region 'name' option to 'id' in the region
configuration, as well it adds a 'description' to provide a human
readable description, which is used in the drop-down in the UI.
This also fixes the JS API generation. In a previous commit the the
protobuf package was updated, but the latest protobuf compiler no longer
supports generating JS code (this now requires an external plugin). This
has been fixed.
Please note that if you have implemented custom ADR algorithms that are
referring to the 'regionName' key, that you must change this to
'regionConfigId' (see the ADR code example).
