IN PROGRESS - issue FDU-336: Boton "Imprimir y Pagar" en wizard de pagos
de facturas   
https://trescloud.atlassian.net/browse/FDU-336

Se agrego button y funcion con los dos pedidos de imprmir y pago
Merge branch 'master' of https://github.com/pepetreshere/OpenERP-7-ecuador.git
IN PROGRESS - issue FDU-336: Boton "Imprimir y Pagar" en wizard de pagos
de facturas 
https://trescloud.atlassian.net/browse/FDU-336