New policy to deliver material to building sites

The game could become strategically more interesting by a modified delivery strategy to building sites (houses that are in build process). a) Delivery of build material should only start when the Builder has arrived at the location of the building. b) Build material for larger houses is split into two or more loads which are sent out with a time delay, depending on the progress the Builder has made. Rationale: Both measures award proper distribution of Warehouses, including their proper supply with build material, and punish far-outreaching constructions. Both measures thus diversify the profile of game strategy in placing buildings.