New LUA Functions: IsNight, SetGridID, AddMultiFloorLift

[Jabantiz]

IsNight()
SetGridID()
AddMultiFloorLift()

IsNight has been in for a while, just never documented, it will check the zone to see if it is night time as defined by rules

AddMultiFloorLift was added because lifts that go to multiple floors do not act like other lifts/doors/widgets because SOE wanted to be difficult, so we needed a way to flag the widget

SetGridID was added because in dungeons the grid can change often and result in the spawn porting, temporary solution until the server has geometry to handle this for us (very low priority at this time)