Move deeply-nested template in example to a more shallow location

There is a template in the example project at example/blog/templates/admin2/bootstrap/actions/publish_selected_items.html.

@pydanny says that we should try to move it to a more shallow location in the project.

Start by inspecting example/blog/templates/admin2/bootstrap/actions/publish_selected_items.html and the surrounding example template structure. Identify a shallower suitable location, update any references needed for the example to continue working, and verify that the template is no longer deeply nested.

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