* : Should we inhibit the power manager when a screensaver is inhibited by a movie player?

* : Option to sleep when system is idle for a long time (does anybody needs this?).

* : OnBattery and OnLowBattery DBus signals.

* : Support Suspend Hybrid! ( DeviceKit power will not support this ).
    
* : Use the session logout when we do shutdown, probably use the shutdown session interface anyway.

* : Translations need to be updated.

* : Updating the documentations.
