anchor.diff:  <%@ page contentType="text/html;charset=UTF-8" %>
  +<%@ page import="com.google.appengine.api.users.User" %>
  +<%@ page import="com.google.appengine.api.users.UserService" %>
  +<%@ page import="com.google.appengine.api.users.UserServiceFactory" %>
  +<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
  +<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
  +
  +<%
  +    String firstName = request.getParameter("firstName");
  +    if (firstName == null) {
  +        firstName = "default";
  +    }
  +    pageContext.setAttribute("firstName", firstName);
  +    UserService userService = UserServiceFactory.getUserService();
  +    User user = userService.getCurrentUser();
  +    if (user != null) {
  +        pageContext.setAttribute("user", user);
  +    }
  +%>
   
   <!DOCTYPE html>
   <html lang="en">
   
      <head>
         <meta charset="utf-8">
  -      <title>Γνωμικά</title>
  +      <title>&ldquo;γνωμικά&rdquo;</title>
         <meta name="viewport" content="width=device-width, initial-scale=1.0">
         <meta name="description" content="">
         <meta name="author" content="">
  
positive.code:                   <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                 </a>
                 <a class="brand" href="#">Γνωμικά</a>
                 <div class="nav-collapse collapse">
                    <ul class="nav">
                       <li class="active"><a href="#">Home</a></li>
  
negative.code:                      <li><a href="#contact">Contact</a></li>
                    </ul>
  
                    <p class="navbar-text pull-right">
                       <c:choose>
                          <c:when test="${user != null}">
                             <c:set var="user" scope="page" value="${user}"/>
                             Welcome ${fn:escapeXml(user.nickname)}!
                             <a href="<%= userService.createLogoutURL(request.getRequestURI()) %>">Sign out</a>
                          </c:when>
                          <c:otherwise>
                             Welcome anonymous!
                             <a href="<%= userService.createLoginURL(request.getRequestURI()) %>">Sign in</a>
                          </c:otherwise>
                       </c:choose>
                    </p>
  
                 </div><!--/.nav-collapse -->
              </div>
  