Cleanups, permissions separation into explicit module, absolute import update

apps/document_indexing/models.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import
+
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
@@ -6,7 +8,7 @@ from mptt.fields import TreeForeignKey
 
 from documents.models import Document
 
-from document_indexing.conf.settings import AVAILABLE_INDEXING_FUNCTIONS
+from .conf.settings import AVAILABLE_INDEXING_FUNCTIONS
 
 available_indexing_functions_string = (_(u'Available functions: %s') % u','.join([u'%s()' % name for name, function in AVAILABLE_INDEXING_FUNCTIONS.items()])) if AVAILABLE_INDEXING_FUNCTIONS else u''