Fix Share modal behavior in project listing

The Share modal relies on the project.hydroshare field to work
correctly, which was missing from the ProjectListing serializer.
By adding it there, we ensure that the share modal works correctly.

src/mmw/apps/modeling/serializers.py

@@ -93,7 +93,10 @@ class ProjectListingSerializer(gis_serializers.GeoModelSerializer):
     class Meta:
         model = Project
         fields = ('id', 'name', 'area_of_interest_name', 'is_private',
-                  'model_package', 'created_at', 'modified_at', 'user')
+                  'model_package', 'created_at', 'modified_at', 'user',
+                  'hydroshare')
+
+    hydroshare = HydroShareResourceSerializer(read_only=True)
 
 
 class ProjectUpdateSerializer(gis_serializers.GeoModelSerializer):