Correct handling in the client (portal and servlet) for expired ticket support.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2032 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/app/servlet/AuthenticationHelper.java

@@ -70,6 +70,8 @@ public final class AuthenticationHelper
          }
          catch (AuthenticationException authErr)
          {
+            // no user/ticket - redirect to login page
+            httpResponse.sendRedirect(httpRequest.getContextPath() + "/faces" + Application.getLoginPage(context));
             return false;
          }