Push The PDF Invoice into Magento customer portal

Trouble:

Invoice are handle by OpenERP, printed there and reconciled there. So we need this invoice, no other to be on the portal to avoid any kind of trouble. Allow to see the the modifications done on an invoice in the customer portal.

Solution:

Pushed a dict with basic info (date, N°, amount) and the pdf file. Provide a clean module on the magento side to present them as well as an API to deal with that from OpenERP.