Revert "Fixes and function moves."

This reverts commit 0147f688b32f2058bc88d3e2f4312b9d355d6cf1.
Fixed: Applyforce functions being prepared and not virtual (fixes #55).
Fixed: Physics apply force functions (fixes #56).
Fixed: a few bugs with sound.
Added: casting between vector and vector2.
Removed: Variable instances, whilst awesome they are killing performance.
Added: NST.sendToServer(S)
Fixed: min and max functions.
Added: Events for enabling/disabling HUD rendering.
Added: Events for enabling/disabling sound from URL.
Added: Remade the manual from scratch, its now super user friendly.
Fixed: Spelling error.
Added: toWorldAng, toLocalAng Fixed: Snap Functions
Fixed: Co-routines.
Merge branch 'master' of https://github.com/Rusketh/ExpAdv2
Some editor fixes :D
Forgot to remove a debug message, sorry.
Some fixes :D
Fixed: bug with propcore.
Fixed: RD:setFilter(D)
Changed: OBB functions now work on holograms.
Merge pull request #65 from szymski/master

Added: NST.sendToServer(S)
Update cppi.lua
Update cppi.lua
Fixed: toRad( )