Issue #1789504 by nohup: Added suport for uc_discounts_alt module. Deduct discount before calculating commission

#898882 by darktygur: 'commission percentage for this user' calculated at fixed rate, not percentage

#801304 by darktygur: 'Only products with a node type of product ever show up when an affiliate tries to generate links'

Small fixes (replaced a module_load_include with a require_once, ordered exported products by title, cleaned up some code)

Optimized the product listing in affiliate/links (no need to load each product when we only need the title). Updated the CHANGELOG

Optimizing affiliate link generation. Step 1: Removed some unused code which loadeded taxonomy for each product. Changed the code so that we don't load the products which we don't display.

Another fix to the Settings page. Forgot to move some validation code when moving the cookie tracking settings.

#772560 by darktygur - Enable affiliate commissions for subsequent orders doesn't appear to work right