EZP-20540: Added InvalidArgumentException to moveSubtree() phpdoc
EZP-20540: Covered the issue with test
EZP-20540: Load locations to ensure path string is set
EZP-20540: Implemented throwing InvalidArgumentException
Removed unused import
Fixed exception message
EZP-20540: add exception to stub service implementation
Merge pull request #279 from ezsystems/fix-EZP-20540-move-subtree

Fix EZP-20540 Moving a folder to its subtree doesnt raise an exception