Some fixes and updates due to Quern/ClayHearth blocks:
* turned Quern into a single block with stone crafting recipe
* updated FarmingAndCookingJournal to the changes of Quern
* fixed Quern and ClayHearth not be rotated on placement
Merge pull request #12 from skaldarnar/master

Some fixes and updates due to Quern/ClayHearth blocks: