Fixes #71 (random test fails), removes dependency on TestingBundle

Fixes #71
$repository->execute($search, Repository::RESULTS_ARRAY) returns:
```
Array
(
    [0] => Array
        (
            [title] => test_prod2
            [description] => test_desc2
            [price] => 7.79
        )

    [1] => Array
        (
            [title] => test_prod
            [description] => test_desc
            [price] => 0.99
        )
)
```
which is missing score and id fields. I suggest leaving this place as it is now?