Add show/hide-when-logged-in classes, rework how products are listed for index pages, fix nutrient levels info link, Foundation specific text files
Add show/hide-when-logged-in classes, rework how products are listed for index pages, fix nutrient levels info link, Foundation specific text files

openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server