Chat with redux state manager

serg1557733 159183f677 fix editing messages, fix array users back vor 1 Jahr
backend 159183f677 fix editing messages, fix array users back vor 1 Jahr
frontend 159183f677 fix editing messages, fix array users back vor 1 Jahr
package-lock.json cca472ae25 add media query and some fix vor 1 Jahr
package.json cca472ae25 add media query and some fix vor 1 Jahr