title: How to disable Handle Bar dragging in HighStock JS
body: <p>The highstock api for navigator.handles provides only parameters for background color and border color. My requirement is to disable the handle bar dragging and the range should be selected only via range selector menu. 
  I read this post <a href="https://stackoverflow.com/questions/15125572/disabling-handlebars-in-highstock-charts-navigator">Disabling Handlebars in HighStock charts navigator</a></p>
  
  <p>But it does not serve my purpose. 
  Is there a way where if I set the property as enabled: false, or enableDragging: false then it hides the handle bar thus disabling the dragging functionality for highstock handle bars.</p>