Fixed spies stealing multiple tech steals in one turn

Resolved new game ANRs in a better way

AI: 
- Keep 'don't spread religion' promises better
- Greatly discourage attacking stronger enemies

Modding:
- Added "Remaining [civFilter] Civilizations" as countable value
- Conditional phrasing: "for [civFilter]" -> "for [civFilter] Civilizations"
- Resolved badly configured ruins causing crashes
- Added 'City-State' as value for nationFilter