ENH: Various improvements.

  + No fatal error on triSurfaceTools::surfaceSide, commented out WarningIn.

  + Make cellSizeControlSurfaces look for a GREAT span for the nearest surface
    point.

  + Identify and limit filtering on single internal face cells in polyMesh
    quality assessment.

  + Create cellSet of remaining protruding cells after polyMesh creation.

  + Implemented wellOutside function by generalising wellInside to
    wellInOutSide.