Elasticsearch admin tab shouldn't crash when no elasticsearch server is running

When there is no elasticsearch running, it would be nice that the elasticsearch subtab of the admin center page loads nicely to say that there is no server running instead of crashing with the following error:
2015-07-01 18:14:46,009 ERROR [http-bio-127.0.0.1-8080-exec-6] [org.nuxeo.ecm.platform.web.common.exceptionhandling.DefaultNuxeoExceptionHandler] javax.servlet.ServletException: None of the configured nodes are available: []