Chat with redux state manager

serg1557733 07683ad661 add new private message indicator il y a 1 an
backend 07683ad661 add new private message indicator il y a 1 an
frontend 07683ad661 add new private message indicator il y a 1 an
package-lock.json cca472ae25 add media query and some fix il y a 1 an
package.json cca472ae25 add media query and some fix il y a 1 an