maps/new zooms out too far now

[bartvde]

We had changed this in https://github.com/GeoNode/geonode-client/blob/3a8aad84b9979d412b1546c9f46285d0737ff4e6/src/components/geonode.jsx#L51

but now that we pass in the map config (to get the baselayer), we are getting a different zoom again.