Chat with redux state manager

serg1557733 f062b9b26e add loading progres button and fix bugs 2 vuotta sitten
backend e9d57662c6 fix file sending reducer 2 vuotta sitten
frontend f062b9b26e add loading progres button and fix bugs 2 vuotta sitten
package-lock.json cca472ae25 add media query and some fix 2 vuotta sitten
package.json cca472ae25 add media query and some fix 2 vuotta sitten