pmd: fix #1168 Designer errors when trying to copy xml to clipboard
Document that PMD requires java 1.6
Fix unit test DesignerTest so that it runs in headless mode, too.
Merge remote-tracking branch 'upstream/master' into WIP
Added @author and @since tags to JavaDoc related classes
Added tests for @author, @version, @since, @value, @param, @see, @throws, @exception tag correctness
Made JavaDocCommentRule conform to release requirements