Invoices table changes#2

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antico5 wants to merge 6 commits intomasterfrom

invoices_table_changes

Commits on Jan 2, 2017

Invoice default order.
Armando Andini
committed
Changes in invoices template.
Armando Andini
committed
Color for links.
Armando Andini
committed
Add fields and link to delete invoice from #show view.
Armando Andini
committed
Tablas cambiadas por estilo con bordes.
Armando Andini
committed
Cambiados estilos de botones. Eliminados botones innecesarios. Cambiado
Armando Andini
committed