Merge pull request #65 from jerrywell/master

add ztl test case
Bug ZK-2244: Defective movements in the ZK 7.0.1 Listbox.
 - The bug was fixed in this fixed - ZK-2305 with this commit - https://github.com/zkoss/zk/commit/593bc938122f69a6352815f70f0967024106afe5
Merge branch '7.0-Stable' of github.com:zkoss/zk