Don't spawn prophet in holy city if it's been taken over

City location ranking takes modded city work range into account

Modding: Avoid crashes from "free buildings that no longer apply once they're in the city / change which buildings are free"

City stats table immediately scrollable again, AND scrollable all the way to the end

By RobLoach:
- Add unique `denounced` quotes 
- Mods can add voiceovers for start intros 

Fix showing negative mod download progress - By SomeTroglodyte