Updated example data csv to use new
relative to current vt paths.
Cleanup so that the test suite would run

Conflicts:

	GeneralSpatialViewer.py
Cleaning out unused files
Added functionality to try to find files
at a relative location to the current vt file.

This will allow users to run the tutorial without
modification if they install SAHM in thier userpackages
directory.

Conflicts:

	init.py
	utils.py
for the love of...
The r function to check if a directory is writeable
is returning false negatives on the CSU network.

Commented out this line to make things work.
fixed bug in import path that was preventing
sahm from being installed in other locations.
Changed the default for a missing
previous session folder from
os.makedirs(session_folder)
to tempfile.mkdtemp(prefix="SAHM_session_dir_")

This corrects a bug Nick was getting at
CSU when he had a session folder on a disconnected drive.
Updated example data csv to use new
relative to current vt paths.
Fixed bug introduced by Merge of master into parallelR
Fixed bug introduced by Merge of master into parallelR
Merge branch 'parallelRModules' of I:\VisTrails\DevWorkspace\emptyGITs\sahm_emptyGIT into parallelRModules

Conflicts:
	init.py