Chat with redux state manager

serg1557733 55992529b6 add serwiceworker template and swregistration for pwa 2 anni fa
backend bf0c75916f add manifest file for pwa 2 anni fa
frontend 55992529b6 add serwiceworker template and swregistration for pwa 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