Use node-name if sname isn't set in args
Better error handling in edts-query
Correct return value
Be more permissive in eunit test
Fix expected values
Merge pull request #60 from plux/fix-shell-node-name-nil

Use node-name if sname isn't set in args
Load site-wide file when testing
Correct return value from edts-get-free-vars
Fix edts-query