Added new three.js geometry

By the name THREE.AbsPlane
This geometry uses tangent vectors to ensure correct orientation.
*** UNTESTED ***
Just about to adapt the code to use the new AbsPlane geometry
Problems with pass by reference
WinDoors are wildly deformed!
improved comments on horizontalSurfaceProjection_body
AbsPlane fucker up tangentVector_azimuth og tangentVector_polar!!!!

Fuck dig AbsPlane