InteractionDialog now use the description.

modules/gui/qt4/dialogs/interaction.cpp

@@ -174,6 +174,7 @@ void InteractionDialog::update()
     {
         assert( progressBar );
         progressBar->setValue( (int)(p_dialog->val.f_float*10) );
+        description->setText( qfu( p_dialog->psz_description ) );
         msg_Dbg( p_intf, "Setting progress to %i", progressBar->value() );
     }
 }