Add test seed files.
Merge branch 'products_dev' into development
add create function in item_categroy
Fix conflicts in item_category create and edit page
Fix validation bugs of item_category
change code logic make 'code' and 'name' can be edited in
item_attribute_type edit page
fixed bugs in item_categroy
Revert "fixed edit images bug about item cloth"

This reverts commit 96260a2d022d9eea3c084431239b5ef56fbf82f4.
add oldman
add create function in item_categroy/show
modify the item category group index view
Merge branch 'products_dev' of wr-dell:/home/git/AOKI_EC into products_dev
Add migration file of shop information function.
refs #12195
Add migration file of sales.
refs #12195
Add migration file of mail_templates.
refs #12195
Add migration file of item sets.
refs #12195
Modify field name to "payment_method_id" from "supply_payment_type".
refs #12195
Add migration files of orders.
refs #12195
Fix unit test of orders. (But not passed the test yet)
Fix bugs in item_category edit page