[FIX] account_analytic_analysis: contract manager as salesman

Copy the contract's manager to the invoice's manager field when generating
recurring invoice.

Closes #6568

addons/account_analytic_analysis/account_analytic_analysis.py

@@ -704,6 +704,7 @@ class account_analytic_account(osv.osv):
            'fiscal_position': fpos_id,
            'payment_term': partner_payment_term,
            'company_id': contract.company_id.id or False,
+           'user_id': contract.manager_id.id or uid,
         }
         return invoice