title: Django admin not showing models
body: <p>I'm damned if I can figure out why my models are not showing in the admin.</p>
  
  <p>models.py looks like this:</p>
  
  <pre><code>from django.db import models
  
  class Publication(models.Model):
      title = models.CharField(max_length=255)
  
      def __unicode__(self):
          return unicode(self.title)
  </code></pre>
  
  <p>admin.py</p>
  
  <pre><code>from django.contrib import admin
  from publications.models import Publication
  
  admin.site.register(Publication)
  </code></pre>
  
  <p>settings.py</p>
  
  <pre><code>...
  
  MIDDLEWARE_CLASSES = (
      'django.middleware.common.CommonMiddleware',
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
      # Uncomment the next line for simple clickjacking protection:
      # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
  )
  
  TEMPLATE_CONTEXT_PROCESSORS = (
  'django.core.context_processors.request',
  'django.contrib.auth.context_processors.auth',
  'django.contrib.messages.context_processors.messages',
  )    
  
  
  INSTALLED_APPS = (
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.sites',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      # Uncomment the next line to enable the admin:
      'django.contrib.admin',
      # Uncomment the next line to enable admin documentation:
      # 'django.contrib.admindocs',
      'south',
      'publications',
  )
  </code></pre>
  
  <p>Directory structure:</p>
  
  <pre><code>xrdb/
  ├── manage.py
  ├── publications
  │   ├── __init__.py
  │   ├── models.py
  │   ├── tests.py
  │   └── views.py
  └── xrdb
      ├── __init__.py
      ├── admin.py
      ├── settings.py
      ├── urls.py
      └── wsgi.py
  </code></pre>
  
  <p>And from the admin page, I can see Groups, Users, and Sites. No Publications!!</p>
  
  <p>Any help??
  Thanks!!</p>
  
  <p>EDIT: I've already synced and migrated and admin.autodiscover() is in urls.py. </p>
  
  <p>EDIT II: Updated files above. Added directory structure.</p>