Fox - Miner Dimension

add in the dimension:

- grass blocks on top layer
- dirt
- coarse dirt under the water of oceans
- more emerald ore
- enable spawn of cow, pig, sheep, bat, zombie, skeleton, spider, and fox (for the mod name)
- with a slim chance of spawn : zombie horse and giant zombie
- generate trees
- generate gravel
- generate mineshafts
- generate flower, grass, sea grass