[pos] [minor] removed import of pos.js
[minor] [fix]
[minor] [fix] apply float precision on over-billing validation
[minor] currency trigger should not be called in refresh
[fix] [minor] if customer_account is mentioned in POS Settings, also fetch customer_name
[fix] [minor] null value issue
[fix] [minor] syntax error in stock entry
[fix] [minor] pull only undelivered items in Dn from SO