title: Django template tag + template with user.is_authenticated doesn't work
body: <p>I have a strange problem, in my settings file everything is enabled that needs to be enabled for user.is_authenticated use in a template.</p>
  
  <p>I have the following template tag code:</p>
  
  <pre><code>from django import template
  from progmatic.cms.models import navigation, navigation_item
  from django.template.defaultfilters import slugify
  from django.shortcuts import render_to_response
  from django.template import RequestContext
  
  register = template.Library()
  
  """ Gets the menu items you have entered in the admin.
   No arguments are accpeted"""
  
  def get_hoofd_menu( ):
   menu = navigation.objects.get( slug = "hoofd-menu");
   mcontent = navigation_item.objects.filter( parent_menu = menu);
   return { 'mcontent' : mcontent }
  
  def get_sub_menu( menu ):
   menu = navigation.objects.get( slug = slugify(menu) )
   mcontent = navigation_item.objects.filter( parent_menu = menu )
   c = RequestContext( request, { 'mcontent': mcontent,} )
  
   return render_to_reponse('menu.html', RequestContext(request, { 'mcontent' : mcontent }) )
  
  register.inclusion_tag('menu.html')( get_hoofd_menu )
  register.inclusion_tag('menu.html')( get_sub_menu )
  </code></pre>
  
  <p>And the template (menu.html) is as follows:</p>
  
  <pre><code>{% block mainmenu %}
      &lt;ul&gt;
       {% for content in mcontent %}
        {% if content.login_required %}
         {% if content.to_page %}
          &lt;li&gt;&lt;a href="/page/{{ content.to_page_slug }}"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
         {% endif %}
         {% if content.to_url %}
          {% if content.external %}
           &lt;li&gt;&lt;a href="{{ content.to_url }}" rel="external"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
          {% else %}
           &lt;li&gt;&lt;a href="{{ content.to_url }}"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
          {% endif %}
         {% endif %}
        {% else %}
         {% if content.to_page %}
          &lt;li&gt;&lt;a href="/page/{{ content.to_page_slug }}"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
         {% endif %}
         {% if content.to_url %}
          {% if content.external %}
           &lt;li&gt;&lt;a href="{{ content.to_url }}" rel="external"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
          {% else %}
           &lt;li&gt;&lt;a href="{{ content.to_url }}"&gt;{{ content.name }}&lt;/a&gt;&lt;/li&gt;
          {% endif %}
         {% endif %}
        {% endif %}
       {% endfor %}
      &lt;/ul&gt;
      {% if user.is_authenticated %}
      JEEEEEEEJ LOGGED IN
      {% else %}
      Not logged in
      {% endif %}
      {% endblock %}
  </code></pre>
  
  <p>But it always returns Not logged in even when i am logged in...
  Does anybody has a clue what is wrong with this code?</p>
  
  <p>Thanks in advance.</p>
  
  <p>Greetings,
  Bloeper</p>