BUG: Fixed indentation and node connections for FS template workflow
BUG: Fixed pipeline for Freesurfer longitudinal processing
BUG: Remove use of https for svn repository.

The https protocol from nitrc requires that credentials be configured.  This
makes general checkouts difficult.  Using http makes the process more
robust.
BUG: Fixed incorrect assert error in template building
Merge pull request #172 from dmwelch/bug/fsLongitudinal

BUG: Fixed incorrect assert error in template building
STYLE: Cleaned up argparser and subparsers for clarity
ENH: Fixed FS Logic for running Freesurfer Template building.

The scripts to run freesurfer template building were not properly formatted.