Work around the undesired R8 terrain sprite offsets.
Convert TS terrain height, ramp, and minimap colors.
Introduce TerrainTemplatePreviewWidget.
Use LeftColor in minimap.
WIP: Hook up basic city buildings.

TODO Footprints.
Add demo map used for news screenshots.
Introduce ActorPreviewWidget and associated plumbing.
WIP In-game map editor.
wtf minimap