(This is not expected to be their final location, but it makes them easier to relocate when necessary, and easier for users to edit until the whole project's file structure is finalized.)
Updated macros that rely on the GROUP_, MAP_ constants to use the map macro
Added GROUP_NONE and MAP_NONE for the sake of compatibility with this new scheme
Added new macro elevfloor to simplify the definition of elevators under this new scheme
Interpretation of the Decoration Attributes table is complete.
Other changes include some more event flag and function naming, as well as a minor tweak to the person_events of every map.
