if a page appears twice, the nesting is broken

[micgro42]

For a control page like the following with a page (en:products:c:projects) appearing twice:

  * [[en:products:a:start|BasePage]]
    * [[en:products:b:d:start|2nd-level Page with hidden child]]
      * [[en:products:c:projects|hidden 3rd-level page]]
    * [[en:products:b:archive:start|2nd-level pape]]
    * [[en:products:c:start|current 2nd-level page with visible child]]
      * [[en:products:c:projects|visible 3rd-level page]]

there are several issues:

• the second line does not have the close class
• when the second-to-last item is the current page then the last item is not visible below it
  • it is however visibile below the 2nd item