MRP repair analytic

This module performs the following:

• It creates a new field 'Analytic Account' in the object MRP Repair.
• It creates a new field 'User' in the operations, and components of the repair order.
• Configuration group which defines if a user can decide if a repair cost is going to be created or not.
• When the repair order is confirmed, for each line of operations and components checked as "Load Cost", will create one analytic line.
• When the invoice is created, will take analytic account of repair, and takes it to the invoice line.