Some Page improvements

Hi,

I've changed some things on you GitHub Page.
We have already talked about this.
After the last changes were to big for a pull request, I've added a small set of changes.

If this works properly i will make another Pull request with additional pages later.

Cheers

header.html includes this area. It will be loaded with jquery into current page.
![header](https://cloud.githubusercontent.com/assets/7161177/4198515/06024284-37fa-11e4-9055-bee7c3888fc6.PNG)


footer.html includes this area. It will be loaded with jquery into current page.
![footer](https://cloud.githubusercontent.com/assets/7161177/4198518/156d0fc4-37fa-11e4-951a-112864d57858.PNG)