On choosing examples, now radio buttons

src/message/simple_edits.py

@@ -72,7 +72,17 @@ class EditExample(QuestionMessage):
 class DoChosenExamples(Message):
     def update_model(self, model):
         chosen_examples = self.get_arg(0, list)
-        selected = document.getElementById("chosen-examples-select").selectedIndex
+        
+        inputs = document.getElementsByClassName("checkable-input")
+        selected = None
+        for idx, el in enumerate(inputs):
+            if el.checked:
+                selected = idx
+                break
+        
+        # none was selected
+        if selected is None:
+            return
         
         # first, remove the selected examples from wherever they were
         for sense in model.entry.senses: