OR: US 20 realigned west of Eddyville

[compdude787]

US 20 has a new alignment that appears to have recently been opened west of Eddyville. The highway browser needs to be updated to reflect this change.

[Bickendan]

1. It's about damn time ODOT finishes this project.
2. Dammit, there goes my clinch of US 20 west of Bend.
3. Also have to figure out what to do with (unsigned) OR 180 now, as I have to figure out if it reconnects to US 20 at all now, or whether it takes over any of the former US 20 routing.
4. And because OR 180 is unsigned, what to do in that regard, as this is the only state where unsigned routes are included because ODOT intended they get signed.

[Bickendan]

Pull request in.