Weather Report a2b

-Fixed missing collisions on some fences on Stage 1
-Added func_nobuild to the water pit on Stage 2
-Adjusted the water on Stage 2 to prevent z-fighting
-Added a snowdrift to the pit on Stage 3
-Added func_nobuild to the base of the snowdrifts on Stage 3 to prevent any possible sentry shenanigans

-The rest of the weather station staff have arrived

- Adjusted the fence prop on blu side of mid for better symmetry
- Added Areaportals
- The head of the Weather Station has finally arrived