Sort messages by country
Currently messages are sorted by road class, road number, area name and finally location code. This will likely give strange results when combining messages from multiple countries, as roads with the same numbers may exist on both sides of the border.
- Sort by country, then by everything else. Drawback: depending on the country sort order, the interesting stuff may appear at the far bottom of the list.
- Sort by road class, then by country. This keeps motorways on top, but the general issue of the country sort order remains.
- Use the MCC (if available) to determine the country we’re currently in, and keep that country on top (can be done with either of the above options). Drawback: may not be reliable around the border, and results may still be unsatisfactory for drivers who are going across the border.