Make sure we have a default value when getting number of lines in listbox,...

Make sure we have a default value when getting number of lines in listbox, otherwise it will do arithmetics with None

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15734 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_viewFieldLibrary/my_list_mode_listbox.xml

@@ -500,7 +500,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>preferences/getPreferredListboxListModeLineCount | python: 30</string> </value>
+            <value> <string>python: preferences.getPreference(\'preferred_listbox_list_mode_line_count\', 30)</string> </value>
         </item>
       </dictionary>
     </pickle>

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_viewFieldLibrary/my_view_mode_listbox.xml

@@ -500,7 +500,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>preferences/getPreferredListboxViewModeLineCount | python: 30</string> </value>
+            <value> <string>python: preferences.getPreference(\'preferred_listbox_view_mode_line_count\', 15)</string> </value>
         </item>
       </dictionary>
     </pickle>

product/ERP5/bootstrap/erp5_core/bt/revision

-412
\ No newline at end of file
+413
\ No newline at end of file