en to pt translation catalogue (4 entries)

[ctx: field:product.product.cost_history,cost_price:]
en: Cost Price
pt: Preço de Custo

[ctx: field:product.product.cost_history,date:]
en: Date
pt: Data

[ctx: field:product.product.cost_history,product:]
en: Product
pt: Produto

[ctx: model:product.product.cost_history,name:]
en: History of Product Cost
pt: Histórico do Custo do Produto
