title: Android UserManager: Check if user is owner (admin)
body: <p>Im developing an app with the latest android version (4.2.1 API-Level 17) for tablets with multiuser capabilities.</p>
  
  <p>I want to restrict certain features (like the access to the app preferences) to the owner of the tablet (that is the user who can add and remove other user accounts)</p>
  
  <p>is there any way i can find out if the current user is the owner?</p>
  
  <p>i read through the UserManager and UserHandle API docs but couldn't find a function that allows me to check for it.</p>
  
  <p>have i missed something or is there another way to do that?</p>