Improved crashing nodes debug.
Merge pull request #377 from chrisfilo/enh/slicer

Enh/slicer
Merge pull request #376 from chrisfilo/enh/ants

Enh/ants
MRIsSmooth interface added, incorporated in tessellation workflow
Tesselation Workflow Fix
Changed workflow defaults to improve speed. Input fixes
Removed ./%s for MRIsSmooth out_file
Updated position arguments
Fixed doc string
MRIsSmooth is now SmoothTessellation. Tessellation example added
Absolute paths for out_file
Regexp substitution for Tessellation tutorial
Doc fixes
Whitespace
Added dummy lh.hippocampus.stl
Number/percentage of tracts are now output from CreateMatrix as a .mat file
Improved CSV merging. Single subj and group level fiber csvs
fixed problems with output path
FreeSurferSource  always reruns
fixed inputs removal bug