This patch adds two more long awaited gamesetup options:
- The ability to chose between the 12 langscapes of the Unknown map. This concludes the deduplication of Unknown, Unknown Land and Unknown.
- The ability to chose between the Day and Night variant of Danubius. The feature is reused to chose between Day and Dawn on Polar Sea.
The patch adds new map previews for every of these options.
The patch removes the biome hardcoding from the getMapPreview code that comes from rP21523, refs #4962.
To achieve that, it reintroduces the g_GameAttributes.settings.Preview field removed in rP23374/D2483 (as it had no more use case then).
The patch was meant to be specific to these maps only to showcase gamesettings that only work for one map.
However these two settings are likely enough to be reused by other maps, so the first Map specific option will probably be in "Fert": D1634.