Asegurarme de que better_errors funciona bien con passenger :)
The user can cancel a sale, and a refund ticket is created
Discounts in sales without test
test for discounts
Do adjust in method total, 
improve views
Merge pull request #10 from suyccom/cancel_sales

The user can cancel a sale, and a refund ticket is created
Pequeño fix en cantidad al cancelar una venta
fix merge
change name of migration because we have 2 migrations with same name
Merge pull request #11 from suyccom/issue_10437_descuentos_pantalla_de_ventas

issue 10437 discounts
Allow add products with amount field.
cleaned code by removing style's and improve details commented in github
Merge pull request #12 from suyccom/issue_10439_teclar_cantidad_venta

Allow add products with amount field.
Reduce stock after sale and increase after cancelling a sale
Merge pull request #15 from suyccom/reduce_stock_on_sale

Reduce stock after sale and increase after cancelling a sale
Fix merge