Users DAO
Adding the photos

* Created PhotoDao class.
* Added a test for it.
* The photo upload controller now creates a new photo in the DB
Removing photo dao

* It was removed since there is no access to the photos unless from the
  accident class.
* Expanded the accident dao test to include a simple test for the photos
* TODO: should handle both cases in the controller the user and 3rd party
  photos.
Adding the photos

* Created PhotoDao class.
* Added a test for it.
* The photo upload controller now creates a new photo in the DB
Removing photo dao

* It was removed since there is no access to the photos unless from the
  accident class.
* Expanded the accident dao test to include a simple test for the photos
* TODO: should handle both cases in the controller the user and 3rd party
  photos.