7.0: add compute date

This module allows to recompute the delivery dates of outgoing moves based on when we expect to receive the goods.

The logic is different for "Make To Order" and "Make To Stock" products and is described in the __openerp__.py.

In the yaml tests you can find three use cases.

Thanks!
This is misleading because it appears in 'Other options' on the products but will run on all the products, not the selected one. At least it appears only for the technical group. Is there a reason to have the entry in "Other Options" or could we just keep the menuitem.