[FIX] account_analytic_analysis: comment field in account.invoice

When creating an invoice from a contract with button "create invoices",
the description linked to the contract has to written in the comment field
of the invoice.

opw:671660

addons/account_analytic_analysis/account_analytic_analysis.py

@@ -705,6 +705,7 @@ class account_analytic_account(osv.osv):
            'payment_term': partner_payment_term,
            'company_id': contract.company_id.id or False,
            'user_id': contract.manager_id.id or uid,
+           'comment': contract.description,
         }
         return invoice