Improvements

- [x] enable/disable title bar (change title bar height)
- [x] enable/disable drop shadow
- [x] override title bar background and content background, also foreground and font stuff
- [x] title bar icon
- [x] close button
- [x] enable contenttemplate
- [x] simple child window moving
- [x] simple child window manager to show window the async way

![2014-12-14_21h20_55](https://cloud.githubusercontent.com/assets/658431/5428896/1daea7dc-83d7-11e4-971b-e5fd1048439a.png)