セールマスタ管理実装（登録） refs #11236
Merge branch 'development' into ticket11236_management_system
Add migration file of items.
refs #12195
Add migration file of orders.
refs #12195
Add authorities of the item function.
最新DB定義に基づいてモデルを再生成　（oil r fromdb:model --all  --no-migration --force）
migrationに伴うテストコード修正
Merge branch 'migration_fix' into development
Merge remote-tracking branch 'origin/development' into products_dev
Fix test seeds: change publish_flag to valid_flag.
change add relation items code logic in item/create and edit pages
add before function in order controller
Merge branch 'development' into ticket11236_management_system
modify item test logic and normal logic(item property was changed)
Fix order index page
add some search conditions and change search code logic
update lang/model order,order_shipping
セールマスタ管理実装（編集） refs #11236
セット商品数はセール種別に依存して必須 refs #11236
セットの関連付けを追加 refs #11236