Merge pull request #378 from mholden8/update-PerkTutor

Updated PerkTutor extension: Experimental modules are not built by default.
Added module with pivot calibration algorithm for stylus usage
Merge pull request #379 from franklinwk/update-SlicerIGT

Added pivot calibration module to SlicerIGT
COMP: Update versions of ANTs and ITK to remove ANTs compilation error due to ITK update
Merge pull request #380 from adrienkaiser/update-DTIAtlasBuilder

COMP: Update versions of ANTs and ITK to remove ANTs compilation error due to ITK update
COMP: Correcting version of ANTs because latest development version is unstable with new ITK
Merge pull request #381 from adrienkaiser/update-DTIAtlasBuilder

COMP: Correcting version of ANTs because latest development version is unstable with new ITK
Added a new Slicer module for thresholding a model
Edited GitHub repo URL
Added documentation URL for new module
Merge pull request #382 from sbengali/update-Cardiac_MRI_Toolkit

Update Cardiac MRI Toolkit
Enabled LA Segmentation module.Updated license and documentation url.
Merge pull request #383 from sbengali/update-Cardiac_MRI_Toolkit

Enabled LA Segmentation using Graph Cuts module
Add IASEM extension

This extension is a compilation of modules which are useful for IASEM
Electron Microscopy. It include some SimpleITK based editor effects
some conventional CLI modules, and a novel SimpleITK base CLI module.
Merge pull request #384 from blowekamp/add-IASEM

Add IASEM extension
Added PlusRemote extension: Convenience module for sending commands through OpenIGTLink Remote to Plus server.
Changed PlusRemote extension homepage to http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Modules/PlusRemote
Merge pull request #385 from franklinwk/add-PlusRemote

Added PlusRemote extension:
Updated MatlabBridge extension: minor bugfixes in Matlab startup.

See details at https://www.assembla.com/spaces/slicerrt/milestones/4120923-matlabbridge-0-6-0
Merge pull request #386 from SlicerRt/update-MatlabBridge

Updated MatlabBridge extension: minor bugfixes in Matlab startup.