qBot fails to handle not having a civ center

[gerbilOFdoom]

On map Gallic Fields, the Romans do not have a civ center. qBot throws errors because "myCivCentres.toEntityArray()[0]" returns a null value when a civ center is not present. I added a null check, but the error popped back up when the economy portion of qBot couldn't find "accessibility" because it wasn't defined due to my null check. I read something about the game slowing down excessively when a civ center is destroyed, don't know if it has been fixed or not but this is probably the issue. Assigning to quantumstate, pretty sure he's the developer of qBot.

[quantumstate]

Fixed in 10987.