Staggering Rock a4

Pretty big update, since a3 got a lot of good feedback.

Point A:

• Widened area outside Blu spawn
• Added a fence that prevents Blu from walking to A too quickly, but the fence lowers after A has been capped
• Increased the size of, and added more cover to Red's high group at A to make it more defendable

Point B:

• Removed the roadblock
• Lengthened and widened the path between A and B
• Widened Blu's holding area before B, and added another building for more cover
• Turned one of the boxjumps into a ramp
• Reduced the amount of metal

Point C:

• Added another stairwell connecting the high and low flanks, so that Blu players are no longer forced to commit to the path they choose
• Added health and ammo to one of the stairwells, as well as filled the dead space in the room
• Turned a ramp into a boxjump so that Red can't reach the high flank as easily
• Reduced the amount of metal

Point D:

• Made the left route more viable for Blu by giving it a height advantage, and making it harder for Red to reach
• Medium health kit on left route moved to the Blu side
• Embiggened the high ground for Red
• Gave Red more cover on their high ground

General Changes:

• Initial timer reduced (4:30 -> 4:00)
• A adds less time (4:00 -> 3:00)
• B adds less time (5:00 -> 4:00)
• C adds less time (6:00 -> 4:30)
  • Might reduce this further in the future, probably to 4:00
• Updated/refined a lot of cover
• Lowered the skybox to something sensible
• Added some more signs
• Added a c a c t u s