tex and documentation 

do not compile Students test 
 remove crap 
 laplacian usage 
 fix grid and Jacobian -- transform the vector by direction 
 figs and minor updates 
updates to pdfs 
 bug in MI - wrong Spline Order 
ENH:  Added entry for ConvertScalarImageToRGB
 updating pdfs 
INIT:  Initial commit for ConvertScalarImageToRGB.cxx.  Converts a grayscale image to a specified colormap.
INIT:  Companion files for ConvertScalarImageToRGB.cxx
INIT:  Companion files for ConvertScalarImageToRGB.cxx
STYLE:  Changed variable BiasFieldControlPointLattice to LogBiasFieldControlPointLattice which is more accurate.
STYLE:  Changed N3 portion to accommodate recent (small) change to itkN3BiasFieldCorrectionImageFilter
STYLE:  Changed N3 portion to accommodate recent (small) change to itkN3BiasFieldCorrectionImageFilter
BUG: Fixed copy and paste mistake
add metric.tex as a separate tex file, may be removed later
 need Figures/r16...