"Recently updated" plugin can be used to reflect arbitrary static content to browser

This request: noformat /plugins/recently-updated/changes.action?theme=XXXXXXXX noformat results in the response: noformat HTTP/1.1 200 OK Server: Apache-Coyote/1.1 Cache-Control: no-cache, must-revalidate Expires: Thu, 01 Jan 1970 00:00:00 GMT X-Confluence-Request-Time: 1412654577325...