getAggregatedAmountList shall be updated or not
- add create_line property
- get quantity on previously generated movements only if there is variation_category_list on model line and if the quantity is not defined
- if there is slices define on the model_line change the quantity according to this slices


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27409 20353a03-c40f-0410-a6d1-a30d3c3de9de