obey warning and import display_name

views.py

@@ -11,6 +11,7 @@
 
 from logilab.mtconverter import html_escape
 
+from cubicweb.schema import display_name
 from cubicweb.view import EntityView, StartupView
 from cubicweb.utils import UStringIO
 from cubicweb.selectors import paginated_rset, sorted_rset, implements