Add sitename to authorname stopwords

[5j9]

Example URL to test: http://www.zdnet.com/blog/itfacts/more-than-1-bln-of-online-games-sold-in-2003/5565

{{sfn|Research|2004}}

* {{cite web|last=Research|first=ZDNet|title=More than $1 bln of online games sold in 2003|website=ZDNet|date=2004-03-25|year=2004|url=http://www.zdnet.com/blog/itfacts/more-than-1-bln-of-online-games-sold-in-2003/5565|ref=harv|accessdate=2014-12-02}}

(There should be no |last=Research|first=ZDNet in the result.)