[ui][templatetags] six import cleanup

beat/web/ui/templatetags/gravatar.py

@@ -28,9 +28,9 @@
 from django.conf import settings
 from django import template
 from django.template.defaultfilters import stringfilter
+from django.utils import six
 
 import hashlib
-import six
 
 
 register = template.Library()