Twitch API doesn't throw TokenExpiredException

[Nixill]

When I intentionally ran a command post-token expiry (to make sure my autorefresher works), the exception that was thrown by the invalid OAuth token was a BadScopeException, despite the fact that both TokenExpiredException and BadTokenException exist. While it wasn't logged what headers the return response came with, the response code and body was a 401 with:

{
  "error": "Unauthorized",
  "status": 401,
  "message": "Invalid OAuth token"
}

[Hampo]

The fix for this should probably be combined with this PR - more info good
#378