Converted usage of ugettext* functions to their gettext* aliases

Thanks Tim Graham for the review.

tests/i18n/patterns/urls/wrong_namespace.py

@@ -1,6 +1,6 @@
 from django.conf.urls import url
 from django.conf.urls.i18n import i18n_patterns
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.views.generic import TemplateView
 
 view = TemplateView.as_view(template_name='dummy.html')