- remove some unused commented code
- replace 'variation_base_category' property by PropertySheet VariationRange
- remove ApparelColourRange property_sheet because VariationRange could be used
instead
- set some fields title as non required fields in some forms

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29344 20353a03-c40f-0410-a6d1-a30d3c3de9de