Do not fail if no acknowledgment is found

master/bt5/vifib_web/SkinTemplateItem/portal_skins/vifib_hosting_theme/AcknowledgementTool_getUserUnreadAcknowledgementJSON.xml

@@ -50,7 +50,11 @@
         </item>
         <item>
             <key> <string>_body</string> </key>
-            <value> <string>result_list = context.AcknowledgementTool_getUserUnreadAcknowledgementList()\n
+            <value> <string>try:\n
+  result_list = context.AcknowledgementTool_getUserUnreadAcknowledgementList()\n
+except ValueError:\n
+  result_list = []\n
+\n
 if len(result_list):\n
   result_list = [result_list[0]]\n
 \n

master/bt5/vifib_web/bt/revision

-490
\ No newline at end of file
+491
\ No newline at end of file