Exit button on main menu now exits.
Properly allow NULL/nil bitmap for mouse cursor (used on exit too).
Trying to add delete of character.
Added prompt.forString.
Merge remote-tracking branch 'origin/CommunityEdition' into
CommunityEdition

Conflicts:
	Exe/Lua/AAEngine/textbox.lua
	Exe/Lua/AAGame/smChooseCharacter.lua
	Exe/Lua/AAGame/uiChooseCharacter.lua
	Source/AALua.c