BonBonB FIX

Fix 1: Boats won't clip through the bridge.
Fix 2: Deleted the trees that were hidden under the roads and railways. I hopefully deleted them all!
Fix 3: Clipping of the road [5:46] in the review of BonBonB video.

Intersection marking Fix: Rotated the chevrons to point towards the traffic.

Change 1: Changed the fortress a small bit, removed some bunkers and made it less cluttered.
Change 2: Improved the detail of the bay near the lighthouse.
Change 3: Added some oil resources in the sea near the swamp.