Hide pay button on invoice
If there is no payment method defined, we should hide the pay button because it is not usable and it will lead user to wrongly try to use it. This will complete #4289 (closed) to promote the usage of payment.
If there is no payment method defined, we should hide the pay button because it is not usable and it will lead user to wrongly try to use it. This will complete #4289 (closed) to promote the usage of payment.