Moved some files around and removed the requirement for Gathering Storm expansion.

The issue of settlers still being purchaseable with faith via the Monumentality Dedication/Policy should have been corrected. My previous method of combatting this did not work at all.

Standard Rules is now available!

Additionally:
- Settler changes to a Support class unit. This ensures that they cannot be bought with faith with the Golden Age Dedication Monumentality (allows purchasing Civilian units with Faith).
- Gold purchasing for Settlers is removed, but they must be purchased, meaning they cannot be trained with Production either. With no valid purchase yields, this effectively blocks Settlers from being created.

Removed compatibility with Standard Rules until a valid workaround is found.