Add Desert Shellmap
Shellmap: Add Viewport movement, coastal attacks and so forth
Shellmap: Add more Soviet buildings and improve paradrop
Shellmap: Add beginning paradrop and Tanya
Stirred up the Shellmap water because Fix Open Areas doesn't work for desert water apparently
Add general attack code to shellmap
Add civilian nudging for new shellmap
Add some awesome things to the new shellmap like Chronosphere/Iron Curtain usage and auto unloading of cargo
Adjust medium tank spawn location
Shellmap polish
Merge pull request #3014 from ScottNZ/shellmap

Additional shellmap for RA