Cursor should be reset and limit should be restored after calling getSingleResult

[Parad0X]

Currently calling getSingleResult leaves cursor in a weird state.
I think the following scenario makes sense

<?php

$document = $cursor->getSingleResult();
echo 'Newest document in this collection was created: ' . date('c', $document['created_at']->sec);

foreach ($cursor as $document) {
    // do something with a document
}

Currently if I try iterating over a cursor after calling getSingleResult I'm only going to get the second document in that cursor.

[travisbot]

This pull request passes (merged e68e6df3 into fdf44d8).

[travisbot]

This pull request passes (merged 80501e47 into fdf44d8).

[travisbot]

This pull request passes (merged 5fb41c6 into fdf44d8).