JB-Sewers-v2

However, some things in the map needed fixes, or finishing touches. When contacting Sludge, he mentioned that he abandonned UT mapping completely, and he said it was OK for me to do the required changes.
Changes from the last known Sewers version: - Fixed the jaildoors - Changed the loading screen - Changed screenhots/material sequence - Removed the Sniperrifles - Aligned/repositioned some brushes/meshes Changes since JELP version (yes, there