WIP: JS Tree improvements

* adds optional short_name rendering for selectable codes
* refactors autocomplete field for compensation state into custom js tree widget
* adds single select (radio) alternative to tree widget templates

codelist/models.py

@@ -65,24 +65,23 @@ class KonovaCode(models.Model):
             ret_val += ", " + self.parent.long_name
         return ret_val
 
-    def add_children(self):
+    def add_children(self, order_by: str = "long_name"):
         """ Adds all children (resurcively until leaf) as .children to the KonovaCode
 
         Returns:
             code (KonovaCode): The manipulated KonovaCode instance
         """
         if self.is_leaf:
-            return None
+            return self
 
         children = KonovaCode.objects.filter(
-            code_lists__in=self.code_lists.all(),
             parent=self
         ).order_by(
-            "long_name"
+            order_by
         )
         self.children = children
         for child in children:
-            child.add_children()
+            child.add_children(order_by)
         return self