Visualize Same-Road Segments Better

[conor-f]

Currently you can have multiple segments with the same name as they are all on the same road. We should decide if

1. These segments should all be treated as separate and if so, we should have a way of differentiating between them (e.g. on hover (or tap on mobile) in the table, highlight the segment on the map to distinguish it from other segments on the same road)
2. We coalesce all the same-named segments into a "road" and just visualize them as is (potentially still with the highlight functionality)