Allow to change the display language of a product

[teolemon]

Many products on Open Food Facts are multilingual:
they have a main language, their ingredients, name, common name are typed into several languages.
They have an ingredient/nutrition/front picture for several languages.

Make it possible to change the display language of a product.
https://world.openfoodfacts.org/language/multilingual/state/complete

https://world-fr.openfoodfacts.org/product/20267605/noix-de-cajou-alesto
https://world-es.openfoodfacts.org/product/20267605/noix-de-cajou-alesto

[l-o-b-s-t-e-r]

@teolemon
I've taken this one and related issues with translations #946

[yegor-napadystyy]

i and my collegues for the exam must use open food facts api, we want to get name/allergens of a product in italian,it is possible? if yes,how we can do it?