dryfield a3

Processed most of the feedbacks received during last playtest :

• Reworked pickup all over the map.
• Reduced capture time.
• Reworked flank route to be less strong and to keep the fight point focused.
• Made balconies on the point easier to acces.
• Adjusted spawn room and orientation.
• Added ground textures.
• And some minor adjustments...

• Made a update to previous layout (a bit more detail, some tweaks in path to spawn, added underground to the point...)
• Set up skybox boundaries and 3D skybox.
• Updated pickups (a bit more) and put patches decals.

To fix : koth announcer still not working. will fix that for a3

To test : Still not sure about the small size of the map and quick route to point from spawn.