Add specific byline for the PloneSite(Personal overview).

![bildschirmfoto 2013-11-28 um 15 05 31](https://f.cloud.github.com/assets/485755/1640329/37585c46-5836-11e3-951d-99d02c9734e3.png)

At a later point, it would be nice to define a sensefull icon for the personal overview. Ideas are welcome...

@lukasgraf could you take a look?