Death Rift boots user from Underworld upon logoff

If a player logged in the Underworld and remained logged off between
server updates, they would suffer a death penalty when they logged back
in due to recreation losing their death rift protection. This smooths
out that rare issue.
Death Rift Destination Text

Users in the room with the caster now get notified about the spell
completing, along with the name of the custom destination.
Merge pull request #103 from M59Gar/shadowrift

Death Rift boots user from Underworld upon logoff