Chat with redux state manager

serg1557733 f8fdbea920 add loading progres spiner first stage 2 rokov pred
backend e9d57662c6 fix file sending reducer 2 rokov pred
frontend f8fdbea920 add loading progres spiner first stage 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