Chaos Space Marine changes

Added Battle Formations Lost and the Damned, Thousand Sons War Coven and
Tide of Spawn. Added Lords of the Black Crusade's formation rules.
closes #322

Added a non-codex option that flags Forgeworld and dataslates to be
shown (WZ Pandorax for later edits included).
Added hidden flags to FW and Dataslate entries, as well as altered force
org entries (unflagged when codex criteria are met).