Chat with redux state manager

serg1557733 2384242f40 Merge branch 'new-branch' vor 1 Jahr
backend 2384242f40 Merge branch 'new-branch' vor 1 Jahr
frontend 2384242f40 Merge branch 'new-branch' vor 1 Jahr
package-lock.json cca472ae25 add media query and some fix vor 2 Jahren
package.json cca472ae25 add media query and some fix vor 2 Jahren