1) 0020976: EDF 1471 SMESH: New ergonomy to display quality controls

1) 0020976: EDF 1471 SMESH: New ergonomy to display quality controls

   interface SMESH_IDSource
   {
+    long_array GetNbElementsByType();

2) Compute progress bar

  interface SMESH_Mesh
  {
+    double GetComputeProgress();