fixes #2922 needed to patch the new history plugin as the reload was prevented there. Only tested that changes in newer browsers which supports the hashchange event (see http://help.dottoro.com/ljgggdjt.php for supported browsers)

git-svn-id: http://dev.piwik.org/svn/trunk@5853 59fd770c-687e-43c8-a1e3-f5a4ff64c105