#311 immersedBoundary tutorial thickPlateRefinedMesh dysfunctional

[Anton]

In the Allrun script of the immersedBoundary tutoriak thickPlateRefinedMesh, after refineThickPlateMesh is called, two lines are commented which move the refined polyMesh from the zero directory into the constant directory. Thus, the mesh is refined and promptly deleted again. The case runs without error, but without producing a meaningful result. After uncommenting the two lines (and thus properly using the refined mesh) potentialIbFoam crashes after many "Insufficient live neighbourhood" errors.