Manage UI
Check if Customer is valid for Sale
Revert "Comment "Item Validation" Check for test"

This reverts commit 7564dc892ba1a18e22137d640e378bf4cb0ecfad.
Update Business.amout on businessDesc update
Add to total amount on SaleDescRow addition
Add getter/setter for businessId
Impl toString()
Set TimeStamp when doing Business
Add getter/setter for Business
Set Business when creating BusinessDesc
Update Total Amount field on row addition
Impl Discount Feature
Minor Changes