Apply ajax to order status update

Signed-off-by: Takashiro <takashiro@qq.com>
Move embbed long javascript into js files

Signed-off-by: Takashiro <takashiro@qq.com>
Fix a typo

Signed-off-by: Takashiro <takashiro@qq.com>
Remove delete button of delivering orders (ajax)

Signed-off-by: Takashiro <takashiro@qq.com>
Fix the bug that prices can not be edited

Signed-off-by: Takashiro <takashiro@qq.com>
Fix a notice

Signed-off-by: Takashiro <takashiro@qq.com>