Microblocks

- Changed version to 1.8
- Added checks to make sure the sender is player
- Added 'safe-mode' (changed in config).
- Added /mb reload
- Cleaned up /mb help
- Scrap deprecated heads alltogether
- Add gold block properly, wrong headname last time
- Made /mb about use getDescription().getVersion()

Upon block break, the player name is still displayed. Minor issue, still to be fixed.