utils.tin: fixed the 'slice' function.
utils.tin: Added 'flags' to the 'maplist' function.
utils.tin: Added a 'isvnum' function to evaluate if the given argument is a valid room vnum.
mapper.tin: Added 3 new aliases: 'mapreload' to reload the map database, 'mapsave' to save changes to the map database, and 'rnote' to add/remove/view notes for the current or given VNum.