added active/inactive status in admin lists

- payment methods (shop settings)
- discounts (shop settings)
- shipping methods (shop settings)
- shipping cost rules (shop settings)
- gift wrapping (shop settings)
- user (administer users)
- user groups (administer users)
- news (costumer info)
- links (costumer info)
- cms pages (customer info)
- coupon series (shop settings)