Title centering in Clean Window style

I noticed the title and the Window Commands are sometimes still overlapping each other. I may have found a solution for this problem, the default Windows 8 behavior:
![normal window centering](https://f.cloud.github.com/assets/6247359/2431848/d4600092-ad46-11e3-8f42-1711678ec238.png)
In the left one, the title is in the exact center. In the second one, after resizing the window, the title is centered between the Window Buttons and the icon.

I did the same thing to the Metro Window when using the clean style. This is the default look:
![mahapps not centered](https://f.cloud.github.com/assets/6247359/2431851/29b55bdc-ad47-11e3-880a-cf987d9378cf.png)
What it looks like after resizing:
![mahapps centered](https://f.cloud.github.com/assets/6247359/2431853/4e414c36-ad47-11e3-9602-b3a051745452.png)

I also placed the title in a ContentControl, setting a TextBlock as the ContentTemplate (like the regular style), so you get three dots if there is not enough space for the title.