lock:handle the mult-monitors of lock

1.first show in the monitor which the mouse in
2.and the mouse move to which monitor,the content move to the one.
3.set all element position when leave-notify
4.sky animation will update size

tower:https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/4485a1d041784cecbb49bc20680ede36/

Change-Id: Ief799276fa00ca43d1b55dcec888ba7f53f31080