Add my_description field to PurchasePackingList_viewFieldLibrary and use it in PurchasePackingList_view.
Reorder some fields in PurchasePackingList_view.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@20351 20353a03-c40f-0410-a6d1-a30d3c3de9de