Update mock scenario
Update mock scenario

* The previous mock scenario was missing elements of
  its results collection needed for testing the compare
  view (eg pc_unmodified). It was also using the old
  stringified version of the taskModel results, though
  this wasn't interfering with anything at the moment

* Replace the mock scenario with a newer one taken from
  stringified model created in the app

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