GUACAMOLE-78: Do not display user menu for anonymous users.

guacamole/src/main/webapp/app/navigation/directives/guacUserMenu.js

@@ -69,6 +69,17 @@ angular.module('navigation').directive('guacUserMenu', [function guacUserMenu()
                 $scope.pages = pages;
             });
 
+            /**
+             * Returns whether the current user has authenticated anonymously.
+             *
+             * @returns {Boolean}
+             *     true if the current user has authenticated anonymously, false
+             *     otherwise.
+             */
+            $scope.isAnonymous = function isAnonymous() {
+                return authenticationService.isAnonymous();
+            };
+
             /**
              * Logs out the current user, redirecting them to back to the root
              * after logout completes.

guacamole/src/main/webapp/app/navigation/templates/guacUserMenu.html

@@ -1,4 +1,4 @@
-<div class="user-menu">
+<div class="user-menu" ng-show="!isAnonymous()">
     <guac-menu menu-title="username">
            
         <!-- Local actions -->