Real-time detail modeling

The last few days I rewrote the detail modeling to have real-time changes when moving the sliders. The feedback from the other developers has been mixed, as some PC's and OS's seem to have trouble doing all the modifications in a short timespan. If you use an svn build, and tried the new detail modeling we would like your feedback on this feature.

Note that the first time you use the slider, it will be slower because of file access, since the targets are loaded from file. After that it should be more fluid, as the targets are kept in a cache.

Internally there is a way to disable normal recalculation or real-time updates completely, but we would like to make it fast enough for everyone, rather than adding a gui to disable this nice feature.