Fee and Discount Module

The Fee and Discount module will allow rules for having the system calculate fees and discounts based on specials, and other conditions. These can be overridden by turning off automatic discount and automatic fees on the trips/quotes.

There should be a non-code wizard for basic rules, and a code based one for the advanced rules.

There should also be notes about the fee/discount. This will help the users choose the right discount if it's done manually.