Update golden images, small differences for geojson changed tile pyramid

For the EPSG 3857 / WebMercator tile pyramid we now consistently use
the base zoom value 559082264.029 instead of 500000000.0.
Previously. both values where used in different places.

Note: the webmercator tile pyramid is specified as
urn:ogc:def:wkss:OGC:1.0:GoogleMapsCompatible in OGC WMTS Simple
Profile, with the used base zoom value as ScaleDenominator of TileMatrix 0.

Author: matzf