removed "addshoppers:" prefix 

The "addshoppers:" prefix for opengraph properties value makes both  Pinterest not recognise products and Facebook not automatically fetch the product image when pasting the product page url into a post

No real need for this auto-celebrative prefix, so remove it
AddShoppers : Merge
AddShoppers : Merge
Merge branch 'master' of https://github.com/PrestaShop/PrestaShop-modules