Able to remove empty translations

src/message/translation_edit.py

@@ -18,6 +18,11 @@ class EditTranslation(DataChgClickMessage):
         # common_accessors.label_list_getter()
         self.translation.tags = common_accessors.label_list_getter()
         
+        # check if empty, remove!
+        if self.translation.is_empty():
+            model.entry.remove_translation(self.translation)
+            return
+        
         new_cluster_idx = int(document.getElementById("cluster-num").value) - 1
         self.handle_cluster_change(new_cluster_idx, model)