add userlog for purchase
user log for stock in
Merge branch 'master' of https://github.com/kiat-mao/shpost_storage
Merge branch 'master' of https://github.com/kiat-mao/shpost_storage
fix bug for csb interface
Merge branch 'master' of https://github.com/kiat-mao/shpost_storage
fix bug for stock out