Total and Used Improvment Slots on City Manager

[Lirisa]

Could we have the total and used improvement slots listed on the city manager? It might help larger nations keep track of all of their cites and make sure that a slot isn't being unused because they didn't realize it wasn't being there. With seven cities, it isn't too difficult to go through each city and make sure that they're all being used efficently, but a few more might get a little troublesome.Also, it would be nice to see at glance, if something like that needs fixed or if not an unused category maybe something that says "Total of Slots available" and "Used slots"