Fix redirect callback url

[nandito]

The log in fails if user logs out on the coffees page, then tries to log in.

This happens because the redirect from the App.js

<Redirect to={{
  pathname: '/',
  state: { from: props.location },
}}/>

sets the from prop to show the nice unauthorized message on the homepage.

And this from: {pathname: "/coffees", search: "", hash: "", state: undefined, key: "..."} is being used for the redirect - and fails because /coffees is not the proper callback url.

Ideas:

• clear the from from the history when logging in
• do not set from, try using other name maybe, etc.