Github user afs commented on the pull request:
https://github.com/apache/jena/pull/64#issuecomment-107519936
Thank for pointing that out. The direct reflection of `site/trunk` is
http://jena.staging.apache.org/ and the button should work there as well. The
website gets published explicitly and we have probably not published it as
Jena3 mentions get into the content. Sorry for any confusion.
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