User Drawings that aren't Geometry Collections FAIL

In Scenarios.js near line 1850:
```
for (var feature_index = 0; feature_index < collection.geometry.geometries.length; feature_index++){
```

If they feature is a MultiPolygon or anything NOT a geometry collection, this breaks and the drawing doesn't load.

Either this code needs to handle more geometry types, or the API should ONLY return Geometry Collections.