Expanded the Atlas->ROI conversion function.  Tested on 174 ROI atlas.
Some performance issues have to be addressed with such high number of ROIs.

New Layer control dialog Added "Up\Down layer"

Enabled the Transparency-Slider functionality inside the new Layer Control Dialog box.

New Layer Control dialog box:

Added the "Active voxel layer" info dialog box and the GoTo (to Advance and Select Active layer) function.