make sure not to pass None to unicode()

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@5439 20353a03-c40f-0410-a6d1-a30d3c3de9de

bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingTransaction_createReversalTransaction.xml

@@ -68,9 +68,7 @@
             <key> <string>_body</string> </key>
             <value> <string>""" Create a reversal transaction from current tansaction. """\n
 \n
-N_ = context.Base_TranslateString\n
-\n
-\n
+N_ = context.Base_translateString\n
 \n
 accounting_module = context.getPortalObject().accounting_module\n
 reversal = accounting_module.newContent (\n
@@ -81,9 +79,9 @@ reversal = accounting_module.newContent (\n
   stop_date = context.getStopDate(),\n
   start_date = context.getStartDate(),\n
   title = N_("Reversal Transaction for ${title}",\n
-                                      mapping={\'title\' : unicode(context.getTitle(), \'utf8\')}),\n
+                                      mapping={\'title\' : unicode(context.getTitleOrId(), \'utf8\')}),\n
   description = N_("Reversal Transaction for ${title} (${source_reference})",\n
-                                      mapping={\'title\' : unicode(context.getTitle(), \'utf8\'), \n
+                                      mapping={\'title\' : unicode(context.getTitleOrId(), \'utf8\'), \n
                                                          \'source_reference\' : context.getSourceReference()}),\n
   resource = context.getResource(), \n
   reference = context.getReference(),\n