title: redux state in componentWillRecieveProps issue with forward and back button
body: <p>I have problem showing an alert dialog using redux. I want to show a success message after user has edited says a form. I set a flag through action > reducer > store. </p>
  
  <p>Then I do</p>
  
  <pre><code>componentWillReceiveProps(nextProps) {
  
      if(nextProps.data.updated_form) {
        alert('form has been updated!');
      }
  }
  </code></pre>
  
  <p>There's problem in this approach. User updated the form, then he click somewhere to go to other route, then he click back to my form, that alert will trigger too.</p>