Method invoked when app is brought back from springboard
<p>I need the following behaviour:</p>

<p>An user leaves my app in the "in-app-setting" view with a tap on home-button. Then he/she does some changes in the iphone setting view and open my app again. Which method do I need to add my code in order to update the UI in the "in-app-setting" view?</p>

<p>Thanks in advance</p>
