performance fix
performance fix

remove unnecessary _client.getPointerMeta(childID,
CONSTANTS.POINTER_SOURCE) &&
_client.getPointerMeta(childID, CONSTANTS.POINTER_TARGET) &&
calls because of performance issue


Former-commit-id: 547a94d19bb5faa9f39b3cd06ecc05ed71cc7852
webgme/webgme-engine,webgme/webgme-engine,webgme/webgme-engine