Approval in backend

backend/iw/data_history.json

@@ -96,6 +96,7 @@
         "measurement": "Measurement",
         "open_versioning": "Open versioning",
         "number": "Number",
-        "querying_data_history": "Querying data history"
+        "querying_data_history": "Querying data history",
+        "phone_number": "Phone number"
     }
 }