Est. Budget: $30.00
Milestone 1: Two features in two files need to be separated. Move the import feature out of inventory_report.php into sales_import.php
Milestone 2: improve inventory_report.php data loading and editing feature by implementing http://dhtmlx.com/docs/products/dhtmlxSpreadsheet/
I prefer you edit the two files attached, but if necessary, ftp credential can be provided.