In the desktop version of the product view, change CSS max height of #product-iframe

Change the max height from 810px to 670px(*) so that the dashboard is fully visible in all desktop devices. Now it does fit into the following devices: 1280x720, 1366x768

(*) 670px is the max height of the caliope's dashboard

This implies adapting the left menu so that menus below the models menu are visible while the models menu is open. Currently, it requires 800px height to satisfy this requirement