The ones with the Chrome symbol will be .htm files - the web pages that will be seen on your site. The duplicates are puzzling as if they have the same name and file extension one will over-ride the other. Have you any facility on your computer for taking screenshots? It would be handy if you have because then we could see what you see.
Also, can you see file extensions - .htm, .js, .txt etc - if not you should enable that ... which Windows operating system are you using?
If you can't see the extensions :-
How to in W7 - http://askabouttech.com/how-to-show-...-in-windows-7/
How to in W8 - http://en.kioskea.net/faq/28650-wind...ile-extensions
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