Muda a versao do Django de 1.8 para 1.9

requirements/requirements.txt

@@ -8,7 +8,7 @@ django-extra-views
 django-model-utils
 django-sass-processor
 django-vanilla-views
-django<1.9
+django==1.9
 djangorestframework
 git+git://github.com/interlegis/trml2pdf.git
 libsass

sessao/views.py

@@ -3,7 +3,7 @@ from re import sub
 
 from django.core.exceptions import ObjectDoesNotExist
 from django.core.urlresolvers import reverse
-from django.forms.util import ErrorList
+from django.forms.utils import ErrorList
 from django.utils.html import strip_tags
 from django.utils.translation import ugettext_lazy as _
 from django.views.generic import ListView