Check whether catchment is well-contained in AOI
Check whether catchment is well-contained in AOI

- Use GEOSGeometry to find the intersection area of the wq catchment
  returned from the db and the input ao
- include catchment if intersects AOI by > some min % of AOI area or some min
  % of catchment area and the sum of those intersection %s is > 2%

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