fix fallback language

client/src/i18n.js

@@ -87,12 +87,12 @@ i18n
   .use(initReactI18next) // passes i18n down to react-i18next
   .init({
     resources,
-    fallbackLng: "en",
+    fallbackLng: "en_GB",
 
     keySeparator: false, // we do not use keys in form messages.welcome
 
     interpolation: {
-      escapeValue: false // react already safes from xss
+      escapeValue: false // react already saves from xss attacks
     }
   });