added type parameter. now the project compiles again

Author: mkoester

samples/java/demo/app/controllers/Application.java

@@ -35,15 +35,15 @@
  */
 public class Application extends Controller {
     public static Logger.ALogger logger = Logger.of("application.controllers.Application");
-    private RuntimeEnvironment env;
+    private RuntimeEnvironment<DemoUser> env;
 
     /**
      * A constructor needed to get a hold of the environment instance.
      * This could be injected using a DI framework instead too.
      *
      * @param env
      */
-    public Application(RuntimeEnvironment env) {
+    public Application(RuntimeEnvironment<DemoUser> env) {
         this.env = env;
     }
     /**