[Beta 4 v0.98][BUG/GAMEPLAY] No check during city naming (dups)

I'm not sure if this has been fixed and it is minor, but there are no checks to verify that a city has not already been named as such before.

I had two cities named the same, and although I could not reproduce it, I had a group of heroes jump into one city and end up in the other city.

Good free teleport!

I'm sure that in the back-end each city has some type of unique identifier (xml wise), but I figured I would throw it out there in case my teleport issue is really an issue somehow.

no need to respond.