Vehicle as dropdown?

[1kastner]

Hello there, would it be appreciated to have the vehicles as a dropdown menu? In the current web ui you need to write text which can be taken from https://github.com/graphhopper/graphhopper/blob/0.7/core/src/main/java/com/graphhopper/routing/util/FlagEncoderFactory.java but that is not that beautiful. Maybe first it could just be hardcoded in https://github.com/graphhopper/map-matching/blob/master/matching-web/src/main/resources/assets/mapmatching-webapp/index.html ? If so I might want to prepare a pull request.