Bug fixes related to image and icon paths, testing files.
Merge pull request #497 from skumar221/update-XNATSlicer

Bug fixes related to image and icon paths, testing files.
Update DataStore to fix build issue against Slicer >= r22759
Merge pull request #498 from jcfr/update-DataStore

Update DataStore to fix build issue against Slicer >= r22759
Update DataStore

See https://github.com/Slicer/Slicer-DataStore/compare/54c6b601...70aaeda
Merge pull request #499 from jcfr/update-DataStore

Update DataStore
Merge branch 'master' of https://github.com/skumar221/ExtensionsIndex

Conflicts:
	XNATSlicer.s4ext