More Custom Things

Added Obsidian, Nether brick and Polished Obsidian fence gates,

Added ALL concrete stairs,

Added Navy Concrete and Navy Concrete Stairs,

Added Tuff Stairs, Slabs, and Tuff Wall,

Added Polished Tuff and its types,

Added Dirt Stairs, Dirt Slab, Dirt Trapdoor, Dirt Button, Dirt Pressure Plate,

Added Nether Salmon,

Added Ender Skeleton,

Added Enderite,

Added a new biome: Stony Beach with the new Pebble block,

Added Hidden Block,

Added Ender Spider,

Added new cake types,

Added Hunger potion,

Added a new painting: Houses,

Added Tumbleweed,

Added new unobtainable blocks,

And finally Added Salt, Rock Salt and Sand Salt, these blocks generate either in the ocean or underground.