Adding HTTP status code to error.toJSON (#2956)

* Adding HTTP status code to error.toJSON (axios#2947)

* Adding Error display div to internal server client.html

Co-authored-by: Jay <jasonsaayman@gmail.com>

lib/core/enhanceError.js

@@ -35,7 +35,8 @@ module.exports = function enhanceError(error, config, code, request, response) {
       stack: this.stack,
       // Axios
       config: this.config,
-      code: this.code
+      code: this.code,
+      status: this.response && this.response.status ? this.response.status : null
     };
   };
   return error;