Clean up references to copyright file in doc sources

Mark Craig

01.07.2015 3b574cd1ee8b7536278db5241e8aef5155e371d3

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user-friendly-name=Mem\u00f2ria cau d'acc\u00e9s
user-friendly-plural-name=Mem\u00f2ries cau d'acc\u00e9s