Fixed issue with determining if market is placeable
Allow entities to be placed within the initial town square
Fixed info to remove reference to small plane
Fixed issue with no messages when can't place item due to building restrictions
Fixed issue with inability to place new towns near enemy spawners or turrets
Fixed issue with market listings breaking when special features disabled due to deprecation of computer item
Fixed issue with mining sound missing for big-crash-site-# entities (in mod)
Default to showing entity info for players (alt-info on chests)
