title: VS 2013 Controller Scaffolding Fails for the ApplicationUser Model (Multiple object sets per type are not supported)
body: <p>In a VS 2013 RTM, MVC 5 project with EF 6, I tried to scaffold a controller based on the ApplicationUser (default with individual accounts authentication). Both <code>ApplicationUser</code> and <code>IdentityUser</code> are mapped to a Users table.
  The wizard opens the context file for editing and tries to add a new db set for ApplicationUser (ApplicationUsers) and then fails with this error:</p>
  
  <p><code>Unable to retrieve metadata for ApplicationUser. Multiple object sets per type are not supported. The object sets ApplicationUsers and Users can both contain instances of type ApplicationUser</code>
  The solution does not have any reference to, or instance of <code>ApplicationUsers</code>.</p>
  
  <p>Is this a known issue? Can the scaffolding be run using command line with options (from PMC)?
  Note: scaffolding also adds an extra db set to the context class if I specify a model that references ApplicationUser (the app works if I remove it and fix references in the generate controller).</p>