[bug r2812] Cities don't grow

[z9999+]

r2812
- Initial map (small island) doesn't grow with "Grow city" tool.
- When I load saved game, and use "Grow city" tool. Renovation and new city buildings are very few.
- When I build a new city by tool, city doesn't have any city buildings.

These problem didn't happen in 102.2.

[Dwachs]

It appears that there the random number is called at the wrong time with respect to the network mode :/ so it returns always zero, which means in this case that the northwestcorner of the city is tested for building a new house, which usually fails.

[prissi]

Will investigate this furhter ... but maybe just ignore this in not network mode.

[z9999+]

Solved in r2818. Thank you.