Revert "Use Hydroshare Playground while production broken"
Revert "Use Hydroshare Playground while production broken"

The production URL is no longer broken, so we switch back
to using it instead of the playground URL.

Refs #2149

WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed,WikiWatershed/model-my-watershed