Redesigned JP Era Signs

Decided to change up some of the icons on the enclosure markers from Return to Jurassic Park. The list of changes is:

- All signs now are yellow, for unity (not movie accurate, I know)

- T. rex, Brach, Trike, Raptor, Dilo, Galli, and Pteranodon have canon accurate icons, taken straight from the brochure or JP Legacy's old icons.

- Ankylosauid, Stegosaurid, Pachycephalosarid, Ceratopsid, and Igunanodont signs feature the same animal, just a more accurate icon to the lore, mostly taken from JP Legacy.

- Small and Medium Carnivores are now changed to Small and Large Theropod, still with Herrera and Metri, now with accurate icons. Even tho Mteri is not much of a large carnivore, I figured the skull they gave it originally was mainly speculative and a very basic carnosaur skull that could work with many other theropods.

- Large Carnivore sign was changed to Spinosaurid, now with a Baryonyx skull.

- Hadrosaurid sign now feature both Corythosaurus and Edmontosaurus, since hadrosauria is a diverse group, and whatever skull was there before wasn't really an in-game species.

- Sauropoda now has a Mamenchisaurus icon.

- Ornithomimid was replaced with Compsognathus to fit the smaller carnivorous dinosaurs (Compies, Troodons)

- Optional: also includes text files that change the name of the Ornithomimids and Large Carnivore to say Compsognathus and Spinosaurid instead, really not necessary.