Tau + Farsight Enclave: Hammerhead, FW weapon

Forge world weapon marked with [FW]
Merge pull request #544 from Jery77/master

Tau + Farsight Enclave: Hammerhead, FW weapon
Merge pull request #547 from arnestig/master

Adding rules and Tyrannocyte options for Hierodules
Merge pull request #1 from BSData/master

Merge from head fork