[ENH]add term and conditions field to be printed and send to the partner
[FIX]do not show rma groups on the rma line form view if they are not activated
the rma module had company_id fields on rma.order and rma.order.line but not on rma.operation,
and no global multicompany record rules.
-> we fix this and avoid a mess with people allowed to see an operation in the drop down list
but unable to use it because if points to a warehouse of another company
