directory traversal in gitblit v1.9.2

[xxcdd]

When i request GET /resources//../WEB-INF/web.xml using burp suite, i get the raw content of web.xml
GET /resources//../ can get all files in Directory: /resources/

This can cause security issue, hope to fix it.

[flaix]

This is resolved by updating Jetty to the latest version. At least I could not reproduce it after updating the embedded Jetty.