Fixed an error with loading the game without the Heroes Mode

After literal years I have finally added support for Heroic Relics at the UA.

PLEASE NOTE: The reason Heroic Relics receive all 3 bonuses rather than just Faith like other relics is because Heroic Relics are "Heroic" after all, and because the point of the UA is to represent Revolutionary Murals (production), Ancient mesoamerican tradition (culture) and catholic Guadalupan devotion (faith). The 3 concepts apply well to what Heroes represent in the game. I also felt that since the Panteón Civil doesn't get benefits from Heroes (unlike Great Artists) a bit of a boost was cool.

- Fixed an issue with the Improvement icon being jagged when suggested on the map.
- San Antonio now properly shows on the CS selection screen.
- San Antonio's icon applies even when BCI is active.

- Fixed an issue that prevented the Great Work Slots for Monuments to exist in certain circumstances.

- Fixed an issue that made the mod not load if the user didn't have the Nubia DLC.

- Fixed an issue that killed the civ pedia

- Fixed an issue that prevented the mod from starting a game if you didn't also have Orélie I installed.

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