refactor(tracking): inject space id via templating instead of using cookies

lib/settings.js

@@ -36,9 +36,6 @@ module.exports = async function settingsMiddleware (request, response, next) {
   }
   /* eslint-enable camelcase */
 
-  // The space id needs to be available in the frontend for our example app
-  response.cookie('space_id', settings.spaceId)
-
   initClients(settings)
   response.locals.settings = settings
   next()