Fix GeoJSON loading, and more.

And more:
- Support GeoJSON with a CRS of type 'name' instead of type 'EPSG'.
- Treat EPSG:4283 as equivalent to 4326.
- Support the GeoJSON variation from South Australia with an extra "envelope" around the normal GeoJSON we're used to seeing.
- Use Cesium's tweaked styling for the feature info panel (different style for
alternating rows).