added missing import of html_quote

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@12348 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Image.py

@@ -32,6 +32,7 @@
 from AccessControl import ClassSecurityInfo
 from Acquisition import aq_base
 
+from DocumentTemplate.DT_Util import html_quote
 from Products.CMFCore.WorkflowCore import WorkflowMethod
 from Products.ERP5Type import Permissions, PropertySheet, Constraint, Interface
 from Products.ERP5.Document.File import File