consider adding a "stops nearby" item in the search bar

[carocad]

superseeds #149 - showing nearby stops would probably be more difficult that imagined since the underlying map implementation (google or mapbox) could also be displaying some other info on the same spot.

I think that having a "stops nearby" item whenever the user touches the search bar would be a better approach.

It would also allow us to use the same approach of "points of interest" as with a normal search