Corrige imports

sapl/base/views.py

@@ -7,12 +7,13 @@ from django.core.exceptions import ObjectDoesNotExist
 from django.core.mail import send_mail
 from django.core.urlresolvers import reverse
 from django.db.models import Count
-from django.http import HttpResponseRedirect
+from django.http import HttpResponseRedirect, Http404
 from django.utils.encoding import force_bytes
 from django.utils.http import urlsafe_base64_decode, urlsafe_base64_encode
 from django.utils.translation import ugettext_lazy as _
 from django.views.generic.base import TemplateView
 from django_filters.views import FilterView
+from django.template import TemplateDoesNotExist
 from django.template.loader import get_template
 from haystack.views import SearchView