Account Invoice Line Default Account

When entering purchase invoices directly, the user has to select an account which will be used as a counterpart in the generated move lines. However, each supplier will mostly be linked to one account. For instance when ordering paper from a supplier that deals in paper, the counterpart account will mostly be something like 'office expenses'. This module will add a default counterpart account to a partner (supplier only), comparable to the similiar field in product. When a supplier invoice is entered, withouth a product, the field from partner will be used as default. Also when an expense account is entered on an invoice line (not automatically selectd for a product), the expense account will be automatically linked to the partner - unless explicitly disabled in the partner record.