pl_cranetop - a blast from the past

[Cybris]

*** Update: pl_cranetop_b8 has been released! Get it from fpsbanana. ***

-- Beta 8 --

Fixed grayscale issue by deleting the color correction entity

Fixed monorail cart passing over ducked players

Fixed getting stuck on the large girders in stage 3

Fixed some bad displacements

Fixed getting stuck behind the barrels in the round room in stage 2

Fixed a hole in the upper floor of stage 3

Fixed the custom chalkboard texture showing up in other maps

Added small side rooms at stage 2 cap 2 to defuse that chokepoint

Added a small tunnel between stage 3 rocket room and the upstairs area

Added a bit more cover from snipers in stage 3

Remade the stairs that lead to the rocket tower

Used a different cart switching method for stage 3

More performance improvements for stage 3