Merge pull request #466 from fedorov/update-ChangeTracker

Update ChangeTracker - Fix the bug reported in ChangeTrackerPy issue 15
Remove TubeTk extension waiting build issue are resolved.
Merge branch 'remove-TubeTk'

* remove-TubeTk:
  Remove TubeTk extension waiting build issue are resolved.
ENH: Add extension description for Eigen library
ENH: SlicerRT 0.12.1: Fixed linux crash in the 0.12 release. See more info at https://www.assembla.com/code/slicerrt/subversion/changesets/compare/1260...1267
Merge pull request #469 from SlicerRt/update-SlicerRT

ENH: SlicerRT 0.12.1: Fixed linux crash in the 0.12 release. See more in...
Merge pull request #468 from BRAINSia/add-Eigen

ENH: Add extension description for Eigen library
Rename iGyne repository and Update Needle Segmentation algorithm

This commit is follow up of 96d3c5a.

It changes both the extension repository and extension name to an
implementation agnostic name.

It implements the last version of the needle segmentation algorithm as well as a new method for CAD model registration.

Debug comments have been disable from printing in the python console.
Merge branch 'update-iGyne'

* update-iGyne:
  Rename iGyne repository and Update Needle Segmentation algorithm
Updating PortPlacement extension's git revision to new version that enables use of extension with new Markups module.
Merge pull request #474 from giogadi/update-PortPlacement

update PortPlacement
Updated PortPlacement extension revision to remove testing buttons from the module.
Merge pull request #475 from giogadi/update-PortPlacement

update Port Placement module to remove testing buttons
update LASegmenter:fix a bug for missing external lib
update-CMFreg master
Update UKFTractograpy Extension
Merge pull request #478 from viboen/update-CMFreg

update-CMFreg master
Merge pull request #477 from ljzhu/update-LASegmenter

update LASegmenter:fix a bug for missing external lib
Merge pull request #479 from pnlbwh/update-UKFTractography

Update UKFTractograpy Extension
update: resovled a link error