Coordinate system identification wrong in camerapath.json

[egpbos]

The crs name in data/camerapath.json is given as urn:ogc:def:crs:OGC:1.3:CRS84, while the feature coordinates are in fact in the (yet to be identified) POTree coordinate system (for which we do not know the crs name). The crs part of the object is not actually used anywhere.

Possible fixes:

• Either remove it altogether
• ... or find out what coordinate system we're using, put that in and actually do something with it in the code. See also issue #25 .

[sverhoeven]

Camera path can now be recorded using 'Record camera location' button in the Settings panel.
Must be manually added to app/data/drivemap.json.
The path is in the drivemap coordinate system.