Approval in backend

backend/hu/data_history.json

@@ -96,6 +96,7 @@
         "measurement": "R\u00e9szletes m\u00e9ret meghat\u00e1roz\u00e1s",
         "open_versioning": "Verzi\u00f3kezel\u00e9s",
         "number": "Sz\u00e1m",
-        "querying_data_history": "Adatel\u0151zm\u00e9nyek lek\u00e9rdez\u00e9se"
+        "querying_data_history": "Adatel\u0151zm\u00e9nyek lek\u00e9rdez\u00e9se",
+        "phone_number": "Phone number"
     }
 }