title: Django 1.4 datefield and sqlite problems
body: <p>I have a model like this:</p>
  
  <pre><code>class Some_Model(django.Model):
      name         = models.CharField(max_length=255)
      some_date    = models.DateField(default=datetime.now)
  
      def __unicode__(self):
          return self.name
  </code></pre>
  
  <p>.. which I manage via django admin. There, I can select a date from the js widget. The date is stored as <code>yyyy-mm-dd</code> in the sqlite table, where the field is a <code>datetime</code> field. When selecting the value again, via <code>Some_Model.objects.all()[0]</code>, the field returns <code>None</code>, since the time information is missing, I guess. What is this? It used to work in django 1.3, but after migration, it fails now.</p>