Update 1.21.9

[p]Overlay of reconstruction and demolition at destroyed city center[/p]
[p]Clear message for reconstruction of destroyed cities[/p]
[p]Forests should grow back immediately after pollution has been removed[/p]
[p]Sandbox: Remember tool size[/p]
[p]Upgrade city districts, must be added to the drones' to-do list above cleaning and recycling[/p]
[p]Navigator: Quests are not activated correctly[/p]
[p]Tool ring opens in the wrong place after cutscene[/p]