Chat with redux state manager

serg1557733 ec14be119a add notifications for new incoming messages 2 éve
backend ec14be119a add notifications for new incoming messages 2 éve
frontend ec14be119a add notifications for new incoming messages 2 éve
package-lock.json cca472ae25 add media query and some fix 2 éve
package.json cca472ae25 add media query and some fix 2 éve