Symfony: Added testSigninFail
Symfony: Added test helper method to create user
Symfony: Implemented testSigninSuccess
Symfony: Minor test comments
Symfony: Implemented testCreatePadErrorRequiredFields
Symfony: Implemented testCreatePadSuccess
Symfony: Implemeneted testViewPadNotesSuccess
Symfony: Impelemented testEditPadSuccess
Symfony: Implemented testEditPadErrorRequiredFields
Symfony: Implemeneted testDeletePadErrorAnotherUser
Symfony: Added getEm() method to Pad tests