Chat with redux state manager

serg1557733 020a278aa3 add procfile heroku 2 anni fa
backend 020a278aa3 add procfile heroku 2 anni fa
frontend c1488232b9 test commit heroku 2 anni fa
package-lock.json cca472ae25 add media query and some fix 2 anni fa
package.json cca472ae25 add media query and some fix 2 anni fa