Fix Internaiional Characters (ÄŞØ) + Use "real" Italics

So the default selection at FontSquirrel is english without any extended characters, but you can change this to include the whole (western) set.
The first commit 03bf187 is just an update to all font files in `public/fonts`.

But then i saw that none of the italics were used, because in `public/css/fonts.css` all declarations have a different name and are all set to normal. So the browser thinks there is no italics and just tilts the regular font as fallback. Same with italic-bold and bold (just add pixels). 
Here is an Example (left italics/right tilted)
![real-italics](https://f.cloud.github.com/assets/3909385/308131/79bc8dd2-96df-11e2-8aaa-4b4ad539a12d.png)

So commit	 1f8b8d8 starts to use the real fontweights and commit d89c9c8 lets em/i and strong/b use the new fonts in feeds.

If the last two commits are not accepted all -Italic-* files should be removed as they are not used by anything. Furthermore Extrabold-* is not used in any css-style.