* Properly wrapped Keying Sets in RNA. Now the timeline header shows a popup for choosing KeyingSets instead of the nasty index button.
* Fixed bugs in Outliner code for adding/removing array elements to Keying Sets. This makes it possible to add only the x and z location settings for an object for example.
* Finally the header and menus are done via python.
* Added RNA for sync audio.
Note: This is just a basic working version in python. It needs more work and some layout changes.
Joshua: Feel free to adjust this further :)
