update po

tower: https://tower.im/projects/d4e0ff64158645f28d99a9ca72d0c27b/todos/7d24a476c44a4730ad4e070cbd6db76d/

Change-Id: I05edd058e015c5f78f8cb202b7640c209cf8bc96
take care of the subwindow&modal issues

tower: https://tower.im/projects/d4e0ff64158645f28d99a9ca72d0c27b/todos/5f8c2615dbfb47368b58a197fc363944

Change-Id: I9d91c15e4287fbd39280a66f555f85ed8fe75700