server upgrade

* jetty 9.3.12 -> 9.3.14 #558
* netty 4.1.5 -> 4.1.6 fix #556
* undertow 1.4.3 -> 1.4.4 fix #557

Author: jknack

pom.xml

@@ -2528,10 +2528,10 @@ org.eclipse.jdt.apt.processorOptions/defaultOverwrite=true
   <properties>
     <!-- Dependencies -->
     <jackson.version>2.8.3</jackson.version>
-    <undertow.version>1.4.3.Final</undertow.version>
+    <undertow.version>1.4.4.Final</undertow.version>
     <servlet.version>3.1.0</servlet.version>
-    <jetty.version>9.3.12.v20160915</jetty.version>
-    <netty.version>4.1.5.Final</netty.version>
+    <jetty.version>9.3.14.v20161028</jetty.version>
+    <netty.version>4.1.6.Final</netty.version>
     <javassist.version>3.20.0-GA</javassist.version>
     <javax.ws.rs-api.version>2.0</javax.ws.rs-api.version>
     <slf4j-api.version>1.7.21</slf4j-api.version>