title: How can I access django allauth custom filed
body: <p>I'd like to save and access custom field of allauth. After I save the form and try to access the data but it's empty.
      {{ user.school }}
  I only add forms.py. Do I need to add on models.py too?</p>
  
  <p>-> I change the models but still I can't access the school filed ㅜㅜ)</p>
  
  <p>forms.py
      from django.contrib.auth import get_user_model
      from django import forms</p>
  
  <pre><code>SCHOOL = (
      ('', 'Select your school...'),
      ('ucla.edu', 'UCLA'),
      ('berkeley.edu', 'Berkeley'),
  )
  
  class SignupForm(forms.Form):
      school = forms.ChoiceField(choices=SCHOOL, required=True)
  
      def signup(self, request, user):
          user.school = self.cleaned_data['school']
          user.save()
  
  models.py
      class UserProfile(models.Model):
          user = models.OneToOneField(User)
          school = models.CharField(max_length=128)
  
          def __unicode__(self):
              return self.user.username
  </code></pre>
  
  <p>Thanks in advance!</p>