Train overview - Expanded information

[binarycow]

Now that 2.0 brings a lot of changes to the train system, it would be nice if we could see more information on the train overview screen.

As a starting point, the stations tab should have some way of indicating which stations have which priority. If you have tweaked the priority of stations, then it's easy to lose track of which stations have increased priority, and where they are.

I'm sure there's additional information that could be surfaced here as well.