Adjusts cover and spawns in various places of the map.

Changes are as follows:

• Expanded a room somewhat for more effective cover and place to bunker down
• Adjusted wooden panels and added more cover in the second building.
• More cover on the ground floor (pickup truck, bins. power boxes, sofa with convenient plank behind it, van)
• Adjustments to spawns on all but the first section; the cops should be less of an issue, especially in the final part.
• Added route that was orginally a dead end near the dumpsters.
• Increased visibiity of snipers on the top of buildings, and removed snipers that spawn behind you.
• Added Ladder to second portion (requires repeated jumping to use though; not worked out how to Ladder properly yet)

Feedback is appreciated. Complaining about the balance of the heist being changed is not.