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...

Changes:

• Fixed visual bug in the ceiling of blu's first spawn
• Widened the playspace for A
  • Probably gonna do the same for C and D later
• The roadblock can now be jumped over
  • I didn't originally want it to, but every playtester assumed it was jumpable so I've conceded
• Removed one, but not both, of the rollbacks at C
• Capturing C awards blu more time (4:30 --> 6:00)
  
• Adjusted some respawn timers
• Moved the 1-way gate so only blu can...

Relatively minor update, mostly fixing bugs and the least balanced parts of the map. I would need more testing before I make any more substantial changes.

Changelog:

• Fixed the roadblock from blocking bullets
  
• Lowered point D slightly, so the final hill isn't nearly as punishing
• Redid the staircase to the highest ground at D, to make it more friendly for Blu and less friendly for Red
• Tweaked some spawn times
• Tweaked some health and ammo at C