title: Skip step in personal builds in TeamCity
body: <p>on my CI server running TeamCity 8.0 I have a build configuration whose last steps are the creation and the push of a new version of a NuGet package.</p>
  
  <p>I wonder if there is a way to inhibit these two steps if the current build is a personal one.</p>
  
  <p>Any clue?</p>