Update GS rotations on US and EU

So after receiving ratings from the form I made and the official map ratings, I have crafted a new rot.

Added:
- GS: After the War
- GS: Fairyland
- GS: Royal Garden
- GS: Nostalgia
- GS: Whirlpool
- GS: Blocks
- GS: Deserted

Kept:
- GS: Vengeance
- GS: Splinter
- GS: Classic Flame
- GS: Frozen Palace
- GS: Quartz Mine

Removed:
- GS: Desolated
- GS: Twisted
- GS: Prototype
- GS: Grassy Knoll

I removed the maps that had poor gameplay/design and added in a lot more new maps to bring in some 'freshness' and hopefully encourage more people to make GS maps.