Adjust province starting population

[Iceman 268]

In AoH II the starting population of a province is based on the province growth rate. I suggest that we can directly adjust the starting population of every province in the scenario editor, so we can personalize the population for each scenario. It would work like the Set Up Army option: We choose one or more provinces and push the slider till we get the desired number.

And the province population limit would increase from the current 200 000 to something like 50 millions, so we can use real population numbers.

Edited December 5, 2023 by Iceman