fixing proforma
now proformas in comprobante navbar
added cantidad in validation stock
algunos cambios definidos por la institucion
new fields for liquidacion
only annotate
rollback stock producto when factura is anulada
only css
proforma
Merge branch 'master' of https://github.com/meruba/sisfa
@leviskp Lenin!!
applying redondear
fix some's errors
little details
fix iva proforma
now save paciente if cliente exits?