[FIX] sale_stock: procuremenr.order object does not have a `property_ids`...

[FIX] sale_stock: procuremenr.order object does not have a `property_ids` field. This field is added by `mrp` module, which we do not depend of.

bzr revid: chs@openerp.com-20131112115635-tgbdeocn9awtbxkq