Add specs to check mass-assignment gotchas in PhotosController.

  *people_controller#show
  *photos_controller#index
  *views/people/show both html and mobile

If we don't respond with the content-type text/html, rails will return a 406 Not Acceptable.

Opera doesn't support XHR file uploads and instead submits a regular form.
Thus, we are provided with an UploadedFile object which can be used instead of creating our own compatible object.

We now do a check on photo deletion to ensure that any associated status messages are also deleted if now empty [Issue #1126]