Update FireflyValidator.php
Update FireflyValidator.php

Update uniqueForUser.
tonicospinelli/firefly-iii,tonicospinelli/firefly-iii,firefly-iii/firefly-iii,firefly-iii/firefly-iii,JC5/firefly-iii,firefly-iii/firefly-iii,JC5/firefly-iii,firefly-iii/firefly-iii,tonicospinelli/firefly-iii,tonicospinelli/firefly-iii