cp_birdwatch a4

changelog_a4
Gameplay
* reduced size of ramp-room window
* slightly lowered staircases and platforms in ramp-room
* adjusted placement of props on second-point area
* adjusted wall placement on middle-point area
* modified shed on last to be more useful
Graphical
* added additional signage
* added props to match light entities
* adjusted displacement geometry around second-point area

changelog_a3
Gameplay
o Flattened middle control point to make it more walk-able
o Added new ramp to turbine room's balcony on second control point area
o Removed connection between ramp-room and trench
o Adjusted health-pack sizes (ammo-packs unchanged)
o Adjusted round timer settings
o Equalized re-spawn times (overall decrease)

Graphical
o Added patches under health-packs
o Increased brightness of ambient lighting
o Adjusted doorway between ramp room and shed on mid

Technical
o Cleaned up intersecting brushwork
o Added smooth clipping to curved staircase in turbine room
o Added clipping to rock at mid to prevent players from becoming trapped