Just 4 pieces of terrain to beautify the map.
Replaced forest segments with those from the different climate zone.

This is just an attempt to make the map look more like "Prairie".
Added image_icon with CROP argument making in fiting the sidebar box.
Fix the loading of embedded and referenced maps.
A macro for the new LoW bigmap from Zookeeper.
Made use of the new bigmap macro in LoW1