Changed the Survey public view to give a preview of the Survey. Also changed the access rights for deleting a Survey because of the possible invalid references problem. Added two TODO's to the _public method. The first one involves enabling the SurveyForm to generate a form without passing along the Logic since it is only used to retrieve the Survey entity which we already have available. The second one involves a brief discussion about the getFields method's functionality and name.

"""
Django validation and HTML form handling.

TODO:
    Default value for field
    Field labels
    Nestable Forms
    FatalValidationError -- short-circuits all other validators on a form
    ValidationWarning
    "This form field requires foo.js" and form.js_includes()
"""

from util import ValidationError
from widgets import *
from fields import *
from forms import *
from models import *