Fixed photo regex

Fixed the regex that determines how many valid pictures an animal has. Added "http" to determine if the picture node is empty or not.
Picture link styling + description type added

Moved the picture links below the animal's picture (as opposed to to-the-side)

Also added a 'description' type, which removes any content between ()s or []s. This is done so that the initial's of the writer of the desciption are removed before it is displayed on the page. This creates a much nicer looking desciption.