kogtyv-Towny and Village

1.6 Desert Update

- Added African and desert cities and villages.
1. Sandstone Town
- Spawns in the desert and in Messa
- Consists of tall city buildings
- The first floors will always have shops
- Spacious apartments
2. Nitwit Ghetto
  - Spawns in the desert.
  - Buildings look poor.
  - Residents all wear green robes (nitwit).
  - There are broken houses.
3. Persian
  - spawns in the desert
  - there are nice houses with columns decorated in birch style

- fixed the generation of some structures in ussr_colored_mix
- fixed minor bugs
- added new achievements for new cities