Use logging in ProductOpener::Display
Use logging in ProductOpener::Display

- display_list_of_tags
- search_and_graph_products (removed leftover Data::Dumper)
- search_and_export_products
- search_and_display_products
- display_tag
- display_points
- display_points_ranking
- display_list_of_tags

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