Feature: Add barcode images to receipts and notices

Description

The system can add a patron or item barcode image to receipts and notices.

Feature Category

Add 

You can return to the features overview to select more features. After selecting your features, view your feature comparison!

Software Rundown

Software Status Notes
Evergreen 2.8 (2015) ?
Koha 3.20 (2015) YES

This patch adds a barcode image generator that can be passed a barcode and an optional type ( defaults to Code39, all GD::Barcode types should work ). This image can be embedded in html slips and notices. (3.20)