Add clear any carts feature

Add clear any carts feature

Signed-off-by: fwu <lunchwu@yeah.net>
Add a helper function to hide the "render cart"

Add a helper function to hide the "render cart" in application layouts

Signed-off-by: fwu <lunchwu@yeah.net>
Add order table and order_id

Add order table in scaffold way.
Add order_id into line_item table.

Signed-off-by: fwu <lunchwu@yeah.net>
Add checkout system into current webpage

We can do checkout in the patch.

Signed-off-by: fwu <lunchwu@yeah.net>
Try to add "Push" function but seems failed

Try to add "Push" function but seems failed
Not involve detailed test and debug

Signed-off-by: fwu <lunchwu@yeah.net>