title: Rename NuGet feed
body: <p>I just renamed a NuGet feed published on TFS 2015 from "Libs" to "Libs_release". Now I want to rename it back to "Libs", but I cannot. The (unfortunately german) error message is:</p>
  
  <blockquote>
    <p>Der Feedname "Libs" wird bald verfügbar sein.</p>
  </blockquote>
  
  <p>What can I do? Do I have to wait a certain time?</p>