Chat with redux state manager

serg1557733 4c28157dc0 add private messages counter labe il y a 1 an
backend 4c28157dc0 add private messages counter labe il y a 1 an
frontend 4c28157dc0 add private messages counter labe 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