Removing pass-by-reference and assign-by-reference on ArraySource and CsvSource

Since PHP 5 objects always are 'reference'
Fix others small notices in PHP 5.4 strict mode
Making ArraySourceTest with dbo associations primaryKey type agnostic

Updated methods startTest and endTest with $method argument
Merge pull request #43 from radig/2.0

Fix small E_STRICT in tests and one "plus"