Implementation of the following issues:
Implementation of the following issues:

1) 0022385: [CEA 975] The icon "Clipping" is missing in OCC view
2) 0021793: [CEA 625] Clipping : from coordinates or from bounding box
3) 0021792: [CEA 624] Keep the clipping

FedoraScientific/salome-geom,FedoraScientific/salome-geom,FedoraScientific/salome-geom,FedoraScientific/salome-geom