Add LAScarSegmenter extension
update LAScarSegmenter index
update LAScarSegmenter icon link
Add PortPlacement extension

This extension assists in the planning of surgical port placement in a laparoscopic procedure. Additional details at http://www.slicer.org/slicerWiki/index.php/Documentation/Nightly/Modules/PortPlacement
Fixed several URLs in PortPlacement extension description file
Merge pull request #372 from SlicerRt/update-MatlabBridge

Updated MatlabBridge to 0.4.0 - fixed a crash, improved linux/mac support
Changed module category to IGT. Update git revision to new version with bugfixes
Update UKFTractography
Merge pull request #373 from pnlbwh/update-UKFTractography

Update UKFTractography
Merge pull request #367 from giogadi/add-PortPlacement

Add PortPlacement extension
Update web links
Merge pull request #342 from ljzhu/add-LAScarSegmenter

Add LAScarSegmenter extension
Updated MatlabBridge to 0.5.0: bugfixes

See details at https://www.assembla.com/spaces/slicerrt/milestones/4053603-matlabbridge-0-5-0