WowAce

- updated documentation URL
- added lookup mechanism for ZoneMapIDs
- API: added Tourist:GetZoneMapID(zone)
Returns the MapAreaID of a zone based on the zone name. Use unique zone name, see API reference page for details
- API: added Tourist:GetMapAreaIDByContinentZone(continentID, zoneIndex)
Returns the MapAreaID for a given continent ID and zone Index (the index of the zone within the continent)
- API: added Tourist:GetZoneMapIDFromTexture(texture)
Returns the MapAreaID of a zone based on the texture name