title: Intellij IDEA. Always show maven's `target` directory
body: <p>When creating maven project using Intellij IDEA, by default <code>target</code> directory is not visible in Project explorer. But I can make it visible by removing it from excluded folders in module settings. But it work only for short period of time, and after 10-15 minutes <code>target</code> directory again invisible. So I need again go to module settings and remove <code>target</code> directory from Excluded directories.</p>
  
  <p>How I can make visible maven's <code>target</code> directory forever? </p>