Fix bug ZK-1701: Message for file upload is not good enough in German
http://tracker.zkoss.org/browse/ZK-1701
Fix bug ZK-1702: Invoke binder.loadAll() when the onChange event of the combobox will cause java error
http://tracker.zkoss.org/browse/ZK-1702
exclude jfreechart version conflict
Merge branch 'master' of github.com:zkoss/zk
Merge remote-tracking branch 'VincentJian/B60-ZK-1702'