One feature provided by Entity API in Drupal 7 is the ability to generate admin pages and menu items for managing your custom entity, including a page under content that lists all of the entities and links to their edit forms.
This does seem like a useful feature that we should implement. However, providing this UI should probably be handled in its own separate module, either in contrib or as a submodule of Entity in core.
If we do include Entity UI functionality in core, perhaps we can look at what it would take to use it to generate the admin interface for all core entities.
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It sounds like a CSS/JS bug in the Layouts UI: when the "Add block" row is hidden with display:none, its help/description element isn’t being hidden together. 🔧 Things to try...
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Thank you, Martin and Olaf! I had a feeling that there might be something out there already :) I will check all three options (I will look at porting modules) and report back which one...
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