small fixes, Twitter cards, meta data, static subdomain for images etc.
small fixes, Twitter cards, meta data, static subdomain for images etc.

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