title: PhpStorm how to refresh folder content or whole project tree
body: <p>This may be a dumb question, but I can not find an option to refresh folder content in project tree (PhpStorm IDE).
  Is this (really basic) feature missing?</p>
  
  <p>I know, that content is refreshed automatically, but in some types of folders, where files are generated and changed often this does not work.</p>