Added animal species detail to animals

Added the species detail ONLY if the animal does not have the species Cat, Dog, or Small&Furry (Small and Furry was being used as the placeholder species for Guiniea Pigs. Now, they only show their breed, while rabbits will show both Breed and Species (Ex Rabbit, Loptail)
Added Barn area to adoptable animals

Added the barn area, so now birds/livestock appear on the Small Animal page.
Added CSS to options.

Added CSS which determines the overall theme color (currently just the border color around animal pictures) to the settings page.

Refactored the script/style function for the View Animal page.
Fixed Back to Other Animals button

Fixed the Back to Other Animals link to actually go back to the Other Animals page.
Added check for null field in Pull Animal

Added a check for a null value before creating a field in the generate_fields function, to prevent empty values from being displayed (When age was set to "0", it was still  displaying the "Age" field name, without displaying a value)
Fixed bug with back button on Dogs/Cats

Fixed a bug where Dogs and Cats had a back button that would take the user to the Other animals page.
Added animal rooms as a setting

Added the animal rooms as a setting. This setting is a comma seperated list of the rooms for each animal type (Cat, dog, or other)

Refactored the pullanimals.php to use the list.