Flyout navigation style

optimize flyout navigation styling:
 - Don't use that much space before the navigation children
 - Border below "direct to" link should be in a lighter gray
 - "Direct to" link should be bold
![bildschirmfoto 2014-08-15 um 13 46 57](https://cloud.githubusercontent.com/assets/157533/3932824/550e05f2-2472-11e4-8bb0-e401711412ba.png)