ShowExampleEdit becomes more complex, handles ctrl+click and selecting/moving examples

src/model/sense.py

@@ -35,3 +35,7 @@ class Sense(Editable):
         self.translations = [[] for _ in range(max_num_cluster)]
         for clusterNum, translation in translations:
             self.translations[clusterNum - 1].append(translation)
+    
+    
+    def merge_labels(self):
+        return ", ".join(val for _, val in self.labels)