Cleanups, permissions separation into explicit module, absolute import update

apps/document_comments/utils.py

@@ -1,6 +1,8 @@
+from __future__ import absolute_import
+
 from django.utils.translation import ugettext_lazy as _
 from django.contrib.comments.models import Comment
-from document_comments import comment_delete
+from . import comment_delete
 
 
 def get_comments_subtemplate(obj):