add empty item and preselect it if country detection doesn't work

Author: odeimaiz

services/static-webserver/client/source/class/osparc/auth/ui/RequestAccount.js

@@ -129,14 +129,21 @@ qx.Class.define("osparc.auth.ui.RequestAccount", {
           rich: true
         });
         country.add(cItem);
-      })
+      });
+      // preselect
       fetch("https://ipapi.co/json")
         .then(res => res.json())
         .then(data => {
           const countryFound = country.getSelectables().find(c => c.getModel().toUpperCase() === data.country_code.toUpperCase());
           if (countryFound) {
             country.setSelection([countryFound])
           }
+        })
+        .catch(err => {
+          console.error(err);
+          const emptyItem = new qx.ui.form.ListItem("", null, "");
+          country.add(emptyItem);
+          country.setSelection([emptyItem]);
         });
       this._form.add(country, this.tr("Country"), null, "country");