title: Django get_or_create returns False
body: <p>I'm creating a population script, from an MysqlDatabase to Django Models.<br>
  Im looping through my receiving data from the Mysql and thats going good.</p>
  
  <p>Now I have to write it to the Django Database...</p>
  
  <pre><code>mdl, succeeded = models.User.objects.get_or_create(
      name=name,
      password=password,
      email=email
  )
  </code></pre>
  
  <p>I'm printing <code>succeeded</code> so I can see what the feedback is, but all it gives me is <code>False</code></p>
  
  <p>My Django Model <code>User</code> is edited so all fields can be <code>blank</code> and allows <code>NULL</code> or have a default</p>
  
  <p>My Model <code>User</code>:</p>
  
  <pre><code>username = models.CharField(max_length=20, blank=True, null=True)
  slug = models.SlugField(null=True, blank=True)
  email = models.EmailField(unique=True, null=True)
  name = models.CharField("First and last name", max_length=100)
  uses_metric = models.BooleanField(default=True)
  position = models.CharField("Position", max_length=70, blank=True, null=True,)
  utility = models.ForeignKey(Utility, default=1, blank=True, null=True)
  supplier = models.ForeignKey(Supplier, default=1, blank=True, null=True)
  currency = models.ForeignKey(Currency, default=1)
  phone = models.CharField("Direct phone number", max_length=40, blank=True,  default='+')
  gets_notifications_on_reply = models.BooleanField("Receive notifications", default=False)
  memberlist = models.BooleanField("Show member in memberslist", default=True)
  registration_date = models.IntegerField(default=floor(time.time()), blank=True, null=True)
  is_staff = models.BooleanField(
      _('staff status'),
      default=False,
      help_text=_('Designates whether the user can log into this site.'),
  )
  is_active = models.BooleanField(
      _('active'),
      default=True,
      help_text=_(
          'Designates whether this user should be treated as active. '
          'Deselect this instead of deleting accounts.'
      ),
  )
  USERNAME_FIELD = 'email'
  </code></pre>