Commented out the Search and Replace in Sandbox (#91)

* Commented out the Search and Replace in Sandbox

* Added a check for responseJsonObj.about

Author: adrianparr

proxies/live/apiproxy/resources/jsc/SearchAndReplaceResponse.js

@@ -229,7 +229,7 @@ if (responseJsonObj.url) {
     "https://" + requestHostnameEnv + "/nhs-website-content/",
     "https://www.nhs.uk/"
   );
-} else if (responseJsonObj.about.url) {
+} else if (responseJsonObj.about && responseJsonObj.about.url) {
   responseJsonObj.about.webpage = responseJsonObj.about.url.replace(
     "https://" + requestHostnameEnv + "/nhs-website-content/",
     "https://www.nhs.uk/"