src/constants/settings.js
export const USER_ID = 'userId'
export const AUTH_TOKEN = 'token'
export const LINKS_PER_PAGE = 5
export const REFETCH_INTERVAL = 1000
export const REFETCH_ATTEMPS = 2 // -1 = infinite
export const QUEUE_SCHEDULE = 5000 // interval in ms between two checks of queues to load from/to the server