GREG-85: Parsing mobile phone if it is coming from server. Adding a test

Adding and fixing some logic relating to showing phone numbers. Now the number is parsed correctly if it is sent from the server.

frontend/package.json

@@ -84,6 +84,7 @@
     "eslint-plugin-jsx-a11y": "^6.4.1",
     "eslint-plugin-react": "^7.25.1",
     "eslint-plugin-react-hooks": "^4.2.0",
+    "jest-fetch-mock": "^3.0.3",
     "jest-junit": "^12.2.0"
   }
 }