Update to Jetty 9.2.13

James Moger

2015-09-18 9db6781abe76d2b8dd1368465de60705f5f33f57

 src/main/java/com/gitblit/servlet/RawServlet.java

@@ -468,7 +468,7 @@
            served = true;
         }
      } finally {
         tw.release();
         tw.close();
         rw.dispose();
      }