Bug 1116337: Clear Django 1.5 lint output.

WARNING: This commit breaks compatibility with Django 1.4.

Many of the warnings from the linter are actually spurious/overzealous
reminders about checking the existence of cleaned_data (bad), where we
actually were checking for the presence of specific elements in
cleaned_data (good), but which django-compat-lint can't handle. As
such they were left as-is, and only the actually-relevant changes
(which are fewer in number) have been made.

kuma/demos/models.py

@@ -21,7 +21,8 @@
 from django.db import models
 from django.db.models import Q
 from django.db.models.fields.files import FieldFile, ImageFieldFile
-from django.template.defaultfilters import slugify, filesizeformat
+from django.template.defaultfilters import filesizeformat
+from django.utils.text import slugify
 from django.utils.translation import ugettext_lazy as _
 
 import constance.config

kuma/search/dbgettext_registration.py

@@ -1,4 +1,4 @@
-from django.template.defaultfilters import slugify
+from django.utils.text import slugify
 from dbgettext.registry import registry, Options
 
 from .models import Filter, FilterGroup

kuma/search/models.py

@@ -4,9 +4,9 @@
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.dispatch import receiver
-from django.template.defaultfilters import slugify
 from django.utils import timezone
 from django.utils.functional import cached_property
+from django.utils.text import slugify
 
 from elasticsearch.exceptions import NotFoundError
 

kuma/wiki/tests/__init__.py

@@ -2,7 +2,7 @@
 import time
 
 from django.contrib.auth.models import User, Group, Permission
-from django.template.defaultfilters import slugify
+from django.utils.text import slugify
 
 from html5lib.filters._base import Filter as html5lib_Filter
 from nose.tools import nottest