HTMLParser, support for URLEncoded parameters which have prefix '%' encoded a second time. - closes #9468 #9470

git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@26037 ebf7c1c2-ba36-0410-9fe8-c592906822b4
git-svn-id: svn://svn.jdownloader.org/jdownloader/browser@26038 ebf7c1c2-ba36-0410-9fe8-c592906822b4