Please make the 3-d visualization optional

[bzbarsky]

I'd love a way to just have the route shown without then needing to do the whole 3-d "move along the route" thing.

[sdl60660]

There's been a lot of discussion on the best UX here, which I won't rehash. Based on what I've seen, I will:

• [ ] Keep the autoplay timer by default but add a little options box/drawer with an option to disable autoplay.
• [ ] Add the autoplay timer pause on mobile
• [x] Trigger abandon autoplay on "escape" key press

Should be able to update at some point in the next couple weeks