some tree features

[moonman]

I send some features as a bugs (patches to the 0.86 release) you close some of them but I think you should think about them again.

1. order of the graphs in a leaf when you group by query index ( http://bugs.cacti.net/view.php?id=282 )

2. limit the maximum leafs in one branch when you group by query index and group the remaining by ifName or ifDesc ( http://bugs.cacti.net/view.php?id=238 )