Morro A3b

Changes:
+ Moved the A bridge back and added cover to the battlements to remove a sightline to BLU's spawn
+ Gave RED the high ground overlooking Point B
+ Split RED and BLU's forward spawns, hopefully to give RED team a better chance at defending Point B
- Almost entirely redesigned the C area to help RED team defend Point C

Small Fixes:
+ Added more pickups around the map
+ Brightened up some areas
+ Improved the map's optimization

Changes:
+ Added more pickups around A
+ Added cover blocking site-lines from BLU Spawn to A
+ Widened the mines from A to B
+ Added cover to the upper mine route
+ Changed the positioning of many areas in the C Refinery with the aim of making it easier to defend

Small Fixes:
+ Improved a lot of clipping issues
+ Changed the respawn times, namely when A is captured
+ Added missing pickup paint patches
+ Fixed some small lighting areas around C
+ The Announcer has returned from her vacation
- Removed RED's access to BLU Spawn's silo exit