Creating Articles template creates duplicate font and other unnecessary files

When creating an Articles module, based on a template from openextensions.net, it creates a folder with duplicate font files (flexslider-icon - Copy.eot, flexslider-icon - Copy.svg, flexslider-icon - Copy.ttf and flexslider-icon - Copy.woff).

Also it creates 8 .hbs.js files.
Also: in template.hbs there's an image src that's always '/Portals/0/OpenContent/Templates/Articles/ajax-loader-line.gif'

Can I delete all these files? Are there more files that can be deleted?