* Bugfix: BulkLoader_Result class - Deleted Items
The Deleted function, within BulkLoader_Result class, calls mapToArrayList, which tries to find the recently deleted dataobjects.
To correct:
- when calling addDeleted, store a map of each dataobject within the $this->deleted array; and,
- have the Deleted function return an ArrayList based upon the $this->deleted array.
* Added tests
- created a new test file for the BulkLoader_Result class
- included tests for other methods of this class
- slightly altered the addDeleted function to be consistent other methods of this class
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