New module: Prices according to quantity

When used together with the Advanced Products module, it is possible to set different prices according to the quantity ordered. You can set these rules on the content manager, on the product's chart. There you can set different prices for different quantities.

For example:
    From 1 to 4 products X, the unit cost will be €10. From 5 to 8 products X, the unit cost will be €8, and so on.

This new module is perfect to companies where the production costs in a larger scale decreases the cost per product, making possible (and desirable) the application of a discount according to how many products are ordered.

The shopping cart - and the entire order fase - is altered to serve the Prices according to quality module's features. On the product's chart - on the frontoffice -, besides the price per unit, a table with two columns will appear. The first column represents quantities and the second the price per unit.