settings common reducer

// ...
    // remove auth data from state
    case 'LOGOUT':
      return { ...state, redirectTo: '/', token: null, currentUser: null };
    // redirect to home and put user into state
    case 'SETTINGS_SAVED':
      return {
        ...state,
        redirectTo: action.error ? null : '/',
        currentUser: action.error ? null : action.payload.user
      };
// ...