Add translations for various purposes in nodac

nodac/en/places.json

@@ -52,6 +52,7 @@
         "deleted_place": "Deleted place",
         "merged_places": "Merged places",
         "set_new_main_synonym": "Set new main synonym",
-        "transferred_to_tag": "Transferred to tag"
+        "transferred_to_tag": "Transferred to tag",
+        "duplicate_entries": "duplicate entries (same place)"
     }
 }