[api] if a room doesn't exist, and the user isn't an admin, have /room/login.json API return 404
If an admin uses the settings screen to enter a room name + password at the same time, then the room will be created - this just stops end-users from entering the wrong name
[api] if a room doesn't exist, and the user isn't an admin, have /room/login.json API return 404
If an admin uses the settings screen to enter a room name + password at the same time, then the room will be created - this just stops end-users from entering the wrong name