Make HUD area list multi-line

Conflicts:
	hud.lua
Centralize position getting and sorting

Conflicts:
	chatcommands.lua
	pos.lua
More detailed change_owner message (as per upstream)
Add canInteractInArea
Make canInteractInArea player optional and add an admin check
Make all admin checks use one table

Conflicts:
	chatcommands.lua
Make legacy table copy entries
Copy positions to avaoid multiple references
Tweak README
Add README note