Cleanup and Misc Changes

Commented out some random Chunk Provider code referencing a file that doesn't exist (Unfinished?), Ripped Block and Item declarations out of mod_BiomesOPlenty.class and put them in their own seperate files (Jesus Christ did that require more effort that it's worth), made Holy Grass turn into Smoldering Grass in the nether instead of soul sand, changed Holy grass to be more effective with a pick than a shovel.

This pull request is compatible with Amnet's from what i'm aware, i don't think i changed any of the same things he did.