normalize Item_get*Value and Item_get*Title scripts, all now use getCurrentTrackingList (until the expected behaviour is properly defined)
Item_getCurrentSiteTitle no longer accepts with_title=0 to return the site value. callers have been updated

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27100 20353a03-c40f-0410-a6d1-a30d3c3de9de