Default to W0N0 if the user doesn't have an owned room.

[Eeems]

Currently you have to manually open a room on login if you don't have a claimed room. This should be defaulted to opening W0N0 instead.

[RiftLurker]

There is actually the endpoint /api/user/world-start-room which returns the room the player should focus on when opening the map view. Maybe the returned value could be used for this as well.