Chat with redux state manager

serg1557733 e9d57662c6 fix file sending reducer 2 éve
backend e9d57662c6 fix file sending reducer 2 éve
frontend e9d57662c6 fix file sending reducer 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