Config changes.

Reviewed in https://codereview.appspot.com/13618045/

pom.xml

@@ -28,7 +28,7 @@
 
   <properties>
     <appengine.app.version>chat</appengine.app.version>
-    <appengine.target.version>1.8.1</appengine.target.version>
+    <appengine.target.version>1.8.4</appengine.target.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>
 

src/main/webapp/WEB-INF/appengine-web.xml

@@ -28,6 +28,7 @@
     </manual-scaling>
 
     <sessions-enabled>true</sessions-enabled>
+    <precompilation-enabled>false</precompilation-enabled>
     <system-properties>
         <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
     </system-properties>

src/main/webapp/WEB-INF/web.xml

@@ -20,6 +20,14 @@
     xmlns="http://java.sun.com/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+  <security-constraint>
+    <web-resource-collection>
+      <url-pattern>/*</url-pattern>
+    </web-resource-collection>
+    <auth-constraint>
+      <role-name>*</role-name>
+    </auth-constraint>
+  </security-constraint>
   <servlet>
     <servlet-name>startup</servlet-name>
     <servlet-class>com.google.appengine.demos.websocketchat.servlet.StartupServlet</servlet-class>