Reverting because addition of Xinjiang is wrong!

Ukraine removed <sadface> and replaced with Xinjiang.

[25.28/4]
- Building icons rejigged, using the same methods used for Project Yesugei.
- iface_artdecostan being used to support this project, and others - so first few rows are being used to support units.
- more buildings have received new icons.

REMAINING TO DO?

- Wonders not properly coded in, stats not finalised.
- Appearance of civvy units - peasants, traders, patriots - still pending stuff to be transferred over from AXP (maybe).
- Riflemen skins still untested, no assault infantry, or MG models done.
- Naval units also still undone.

REjigged icons, Senate and Town Centre now have new icons.
Had to jettison some of Azangara's old files. They were making the graphics glitched out.

[25.27/4]
Wonders, continued:
- Icons for our new Wonders added.
- Sounds also added. Senates and Archives now have distinct sounds of their own.
But most icons for buildings still remain missing.
Also found an unpleasant bug that explains why mods crash when you mess around with the order of entries in buildingrules.x. Apparently, buildings also follow the same problematic issue with unitrules - positions matter, not TYPE.

Fengtian clique was also found to not have the right kind of building style. That issue has been fixed.