Massive rework of configs, items and blocks.

I redone where the items/blocsks are stored and how the configs are
handled to clean up it and give space. You can change the config line to
AWWayofTime if you want to keep the compatibility with old configs. Now
you reference the blocks from the ModBlocks and Items from the ModItems.
Way being picky.
Merge pull request #3 from Pokefenn/master

Massive rework of configs, items and blocks.