If a developer attempts to calculate directions with more than three waypoints, the following error is returned:

Error Domain=MBDirectionsErrorDomain Code=-1 "Too many coordinates;
maximum number of coordinates is 3." 
UserInfo={NSLocalizedFailureReason=Too many coordinates;
maximum number of coordinates is 3.}

It appears the [Mapbox Directions API](https://www.mapbox.com/api-d

When you are in Show routes > Style routes by, the drop-down lists for both Mode and Operator have search boxes in the top. These are not finding any matching entries in the list.

Seems like we might have removed the search for Map Matching? Maybe consider doing that here as these are likely to be shorter lists.

NOTE: The search does autocomplete properly in the Show routes list (the part th