Cleanup commit, changed packages and classnames

Complete cleanup commit

Changed the packages to gigaherz.biotech.
Moved several classes into their own package (block, client, common,
container, tileentity).
Renamed main class to Biotech.
Removed dependacy on Basic Components, now depending on Forge
OreRegistry for BC Items.
Removed PackageHandler, now using the UE PackageHandler
Changed the TextureFile locations (now located in Resources)
Renamed Worker to BasicWorkerBlockMachine.
Renamed WorkerTile to BasicWorkerTileEntity.
Renamed WorkerContainer to BasicWorkerContainer

Added all items to the BiotechCreativeTab instead of already existing
tabs.