TUT: basic, IO, preProcessing, VV: clean up tutorials

- TUT: mesh: add missing SnakeRiverCanyon files
- TUT: mesh: add missing cp source in a foamyHexMesh tutorial

tutorials/preProcessing/PDRsetFields/simplePipeCage/0.orig/ft

@@ -26,26 +26,32 @@ boundaryField
         inletValue      $internalField;
         value           $internalField;
     }
+
     ground
     {
         type            zeroGradient;
     }
+
     blockedFaces
     {
         type            zeroGradient;
     }
+
     mergingFaces
     {
         type            zeroGradient;
     }
+
     wallFaces
     {
         type            zeroGradient;
     }
+
     ySymmetry
     {
         type            symmetryPlane;
     }
 }
 
+
 // ************************************************************************* //