Check if enough resources available before allowing building placement

[historic_bruno]

Are you saying you can actually place a foundation without having enough resources? Or only that the building preview shows up?

[rdxi]

When I try to make new unit but short on wood, game immediately tells me so, but when i try to make new building, game allows me to choose building location and only then tells me i don't have enough resources. A bit misleading I think.

[historic_bruno]

I agree, the building icon should not be selectable in that case and I'd like if it was tinted red or something to indicate being short on resources. This is already reported in #921 though, so I'm marking this ticket as duplicate.