Fix "RemovedInDjango19Warning: The django.forms.util module has been renamed.

Use django.forms.utils instead." Commit ready for merge.
 - Legacy-Id: 10764

Author: larseggert

form_utils/forms.py

@@ -7,7 +7,7 @@
 from copy import deepcopy
 
 from django import forms
-from django.forms.util import flatatt, ErrorDict
+from django.forms.utils import flatatt, ErrorDict
 from django.utils.safestring import mark_safe
 
 class Fieldset(object):

ietf/doc/views_draft.py

@@ -8,7 +8,7 @@
 from django.template.loader import render_to_string
 from django.template import RequestContext
 from django.conf import settings
-from django.forms.util import ErrorList
+from django.forms.utils import ErrorList
 from django.contrib.auth.decorators import login_required
 from django.template.defaultfilters import pluralize
 from django.contrib import messages

ietf/liaisons/forms.py

@@ -8,7 +8,7 @@
 from django.conf import settings
 from django.core.exceptions import ObjectDoesNotExist
 from django.db.models.query import QuerySet
-from django.forms.util import ErrorList
+from django.forms.utils import ErrorList
 from django.db.models import Q
 from django.forms.widgets import RadioFieldRenderer
 from django.core.validators import validate_email, ValidationError