New modules

"product_listprice_upgrade" :
The aim of this module is to allow the automatic upgrade of the field 'List Price' on each product.
* added a new price type called 'Internal Pricelist' (currently, we have only 2 price types: Sale and Purchase Pricelist)
* Created a wizard button in the menu Products>Pricelist called 'Upgrade Product List Price'
* When we have completed the wizard and click on 'Upgrade', it will change the field 'List Price' for all products contained in the categories that we have selected in the wizard

"product_visible_discount" :
This module use for calculate discount amount on Sale order line and invoice line base on partner's pricelist
For that,On the pricelists form, new check box called "Visible Discount" is added.
Example:
For product PC1, listprice=450, for partner Asustek, his pricelist calculated is 225 for PC1
If the check box is ticked, we will have on the SO line (and so also on invoice line): Unit price=450, Discount=50,00, Net price=225
If the check box is NOT ticked, we will have on SO and Invoice lines: Unit price=225, Discount=0,00, Net price=225

"product_catalog_report" :
This module use to print report of product catalog with product image, list price