BUG : colormap loading on dragp&drop + delete selection option
BUG : colormap loading on dragp&drop + delete selection option

- allow delete selection after loading files for the 1st time
- when loading on drag&drop, does not apply to all attributes anymore but only the active one (workaround to not change the chosenRange to all the attributes ranges). Next step will be including the chosenRange in the .spvcm file to be able to load it too.

laurapascal/ShapePopulationViewer,NIRALUser/ShapePopulationViewer,juanprietob/ShapePopulationViewer,agirault/ShapePopulationViewer,laurapascal/ShapePopulationViewer,agirault/ShapePopulationViewer,juanprietob/ShapePopulationViewer