Resolve "Add non-uhepp comments/description for each plot"

uhepp_org/uhepp_api/serializers.py

@@ -93,4 +93,4 @@ class PlotSerializer(serializers.HyperlinkedModelSerializer):
 
     class Meta:
         model = Plot
-        fields = ["uuid", "collection", "url", "uhepp"]
+        fields = ["uuid", "collection", "url", "uhepp", "comment"]