Fix script to update copyright section in files

Nicolas Capponi

02.42.2015 effcf6b5e202637bb694b6f6afa758ffe36b4e62

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user-friendly-name=Sk\u0142adnia Atrybut\u00f3w
user-friendly-plural-name=Sk\u0142adnie Atrybut\u00f3w