Translation units with a status of translate="no" are still editable.
Ideally we will provide a way to lock these rows in the main grid and provide a filter so they can be hidden/shown.
Not translatable segments are not editable and are rendered with grey background and foreground.
A checkbox menu item has been added in the View menu. It lets the user choose to view/hide non translatable segments. Last user's choice is saved to the configuration file.