- fixed various bugs and exploits
Thanks to P.R.O.G.R.A.M.M.E.R and Julius Richard for reporting them

- added cover on bridge
- replaced brick wall with pile of wood
- added extra cover on A site

- fixed fountain water

- more detailed ground
- flattened t and ct ramp
- widened t ramp
- added brick wall in window
- more detailed 3D skybox

- added clip brushes to prevent exploits
- reduced bomb radius
- added another tree to barrier
- fixed weapons falling through ground on fountain