Upgrade to jetty 9.2.3.v20140905

Changelog:
http://jetty.4.x6.nabble.com/jetty-announce-Jetty-9-2-3-v20140905-8-1-16-v20140903-7-6-16-v20140903-Released-td4962981.html

pom.xml

@@ -213,7 +213,7 @@
     <dependency>
       <groupId>org.eclipse.jetty</groupId>
       <artifactId>jetty-servlet</artifactId>
-      <version>9.2.2.v20140723</version>
+      <version>9.2.3.v20140905</version>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>