Chat with redux state manager

serg1557733 5a2bf70186 add image sending and files to chat need to fix and simplify 2 rokov pred
backend 5a2bf70186 add image sending and files to chat need to fix and simplify 2 rokov pred
frontend 5a2bf70186 add image sending and files to chat need to fix and simplify 2 rokov pred
package-lock.json cca472ae25 add media query and some fix 2 rokov pred
package.json cca472ae25 add media query and some fix 2 rokov pred