title: WordPress plugin disappeared?
body: <p>On my website i have the Revolution Slider plugin installed.  </p>
  
  <p>Went to the website today and all you see is the Revolution Slider shortcode and the plugin has vanished. WordPress doesn't update itself automatically, and i haven't installed anything new. The only thing i've changed is some CSS. What could be the problem that suddenly a plugin disappears? There is no Revolution Slider option on the side menu, not even on the plugin list.  I'm baffled.  I've asked my colleagues and they haven't changed anything.  </p>
  
  <p>How do i inspect previous changes made to WordPress so i can track what happened?  The slider was working yesterday but not today, now not even in the plugin list.</p>