COMP: Add DataStore module as remote module.

See [1] for details about remote module.

Fixes #3400

[1] http://wiki.slicer.org/slicerWiki/index.php/Documentation/Nightly/Developers/Build_system/Remote_Module

git-svn-id: http://svn.slicer.org/Slicer4/trunk@22780 3bd1e089-480b-0410-8dfb-8563597acbee