I also changed all "Drupal.settings" references to simply "settings,"
and removed the "settings" variable from the :attach function signature
to avoid variable collision.

This is so that there isn't a flash of admin items before they're
hidden. Only the admin items that are certain to be valid CSS selectors
are hidden via this method. (Otherwise, the CSS may not apply to the
admin items as needed.)

This checks whether an anonymous user would have access to the given
tasks, and marks them as toggle-able if not.

This reverts commit e1914824.