title: User image and name is not getting from roaster -XMPP iOS
body: <p>I am trying to develop an XMPP chat application for iPhone. This is my first XMPP application, so i have only some basic idea about the the framework. 
  In my application I have a UICollectionView in my home page(I need to display the users listing on a horizontal scroll, so I am using UICollectionView), where I am loading the last chatted users from the XMPPMessageArchiving_Message_CoreDataObject entity. But on that entity there is no user image and name, so I am trying to access it from the XMPPUserCoreDataStorageObject entity using the jidStr. </p>
  
  <p>But at the first time of loading the application, I didn't get the images and names of the users (getting it as null). But when I got a message new message from any of the user, then all the images and names are loading.</p>
  
  <p>Any idea about this issue ?</p>
  
  <p>Thanks in advance...</p>