never spawn parachutes outside the map

fixes #6302
don't update the actor map outside the map borders
Added self to AUTHORS
Merge pull request #6535 from huwpascoe/bleed

Added self to AUTHORS
Mod Chooser move.

Moved code for mod chooser to mod.common.
Merge pull request #6536 from steelphase-forks/common-modbrowser

Mod Chooser move.
Update cursors.yaml

insert the "missing" space
Simplify GetCtor logic
Merge pull request #6539 from LipkeGu/patch-2

Update cursors.yaml
Merge pull request #6542 from jacobdufault/minor-code-cleanup

Simplify GetCtor logic
Assign the correct voice to the "Nod Banshee Fighter"
Merge pull request #6549 from LipkeGu/bansheevoice

Assign the correct voice to the "Nod Banshee Fighter"
Merge pull request #6334 from Mailaender/parachute-out-of-map

Fixed a crash when parachutes were spawned outside of the map
Add cell overlay debug.
Add WorldCommands for World.WorldActor.
Add dev commands:
	/grid
	/grid above
	/grid below
	/grid full
	/grid half
	/grid type
	/grid range <integer>
	/grid reset
Rename CellDebugOverlay -> CellGridDebugOverlay.
Add UI toolset for grid manipulation.