Added the definition of a Region Of Interest (ROI) (iRA0, iRA1, iDEC0, iDEC1, iFREQ0, iFREQ1) in a cube. The interactions with the bottom left window ( box ) define iRA0, iRA1, iDEC0 and iDEC1, the interactions with the bottom right window ( box ) define iFREQ0 and iFREQ1. The six values are sent via a link to the ThreedJS tool along with the FITS file relative path