[I18N] mrp, website_sale: the order form and the shop product page read in Vietnamese

[I18N] mrp, website_sale: the order form and the shop product page read in Vietnamese

On a Vietnamese interface, the manufacturing order form shows "Cần sản xuất" for the
"To Produce" status span, "Tạo lô" for "Generate Lot", and the two lot-number tooltips
"Xóa số lô/sê-ri đã chọn" and "Tạo số lô mới". The shop product page shows its
"Tài liệu" heading, its "Thêm vào giỏ hàng" add-to-cart buttons, and the
"Tất cả sản phẩm" breadcrumb in Vietnamese.

Each of these terms is the whole element around the words (the status span, the
button markup, the breadcrumb link), so the existing translations of the bare words
never applied: the msgid is the full markup and an empty msgstr left it in English.

Translations only; no code, view or data change.