Use correct types in JSON

[highsource]

bezgl. Json output: es scheinen alle Felder als string codiert zu sein. Für manche Felder wäre vermutlich number das bessere Format.

http://data.deutschebahn.com/apis/fahrplan/#comment-2540192857

This concerns:

• lat, lon, routeIdx, routeIdxFrom, routeIdxTo
• priority?
• id/stopid?
• track? (not sure)
• priority (in Notes)

These properties should have correct JSON types, not just strings.

[mRs-]

The main problem is, that the swagger files are obsolete then, I need to implement my own stuff now, because the swagger file is defined more but the API is returning everything as Stirngs :(