{
  "port": 3000,
  "cookieSecret": "v1qgWb6G33MtwoXv",
  "databaseUrl": "mongodb://localhost:27017/ha",
  "databaseFile": "~/.HomeAutomation/data.json",
  "enableIcons": false,
  "sessionStore": "mongo",
  "accountProvider": "mongo"
}

{
  "port": 3000,
  "cookieSecret": "v1qgWb6G33MtwoXv",
  "databaseUrl": "mongodb://localhost:27017/ha",
  "databaseFile": "~/.HomeAutomation/data.json",
  "enableIcons": false,
  "sessionStore": "memory",
  "accountProvider": "file"
}

Switch to file database and memory session store
Switch to file database and memory session store

By default, that is. So much less faff that messing about with MongoDB.
* No need to install anything
* Nothing needs to be running
* No configuration required
* Doesn't crap out if you reboot
