Twitch Hidden Searchable Model Number

Description:
- This module will add a products_model_spoon input for each product.
- It will be displayed and searchable in admin, searchable on the live site but not displayed there.

Related Uses:
Second Model Number, Internal Part Number, UPC Barcode Number, Searchable Size, Stock SKU Number, Manufacturer Model Number.

What's New
- Files included are now based on a stock 'vanilla' Zen Cart v1.54 install
- Instructions have been organized, line numbers updated for ZC v1.54

Optional Bonus Feature
- Add Hidden Model to Admin->Edit Order - Admin can see hidden model number while viewing orders
- Add Hidden Model to Admin Product Search

Installs into: Admin, Live Site

Works with:
- All Twitch Modules