Small cleanup for fastbreak: creative mode is not handled by this check.
Reduce use of using block-ids in more places.

* Use Material directly in more places.
* Hide id-getting within BlockProperties.

TODO:
* BlockInit, BlockFlags + use of those.
* Possibly other.
Formatting, shuffling, commenting.
Update MCAccessCBDev to use CB 1.7.9-R0.2, update readme.md.