I'm using a very minimal custom theme for the website, but Bartik for administration.
Node Gallery plugin adds tabs to the Edit Node page (e.g.
node/46/edit): "Manage Items", "Sort items" and "Upload new items". When I click on them, the custom theme is used instead of Bartik. I suspect this is because these pages weren't properly flagged as admin pages, or something like that.
How can I make Node Gallery use administration theme for its custom tabs?