Fix Nutcracker backwards megatree.
This change removes the reversing of the x direction in Nutcracker.cs and NutcrackerEffectEditor/NutcrackerTypeEditorControl.cs. Instead it fixes the (probable) reason they were added:  and fixes the reason they were added which (imho) is that PreviewMegaTree::Layout was setting up the 'lines' based on the X coords coming back from GetEllipsePoints.  These come back in decreasing x values.  The fix is to just reverse the order we pick them up in.