Activate dynamic tooltips to reposition it, so that they are always visi...

@maethu 

Right:
![bildschirmfoto 2014-02-10 um 12 41 40](https://f.cloud.github.com/assets/557005/2125152/7468f834-924c-11e3-9f98-b81ca0f8a441.png)

Bottom:
![bildschirmfoto 2014-02-10 um 12 41 28](https://f.cloud.github.com/assets/557005/2125153/746979f8-924c-11e3-8b61-469d4cfa9124.png)

Normal:
![bildschirmfoto 2014-02-10 um 13 11 52](https://f.cloud.github.com/assets/557005/2125165/9552b27e-924c-11e3-80ac-3930e7e77ee6.png)