text: Title: cms/toolbar/toolbar_javascript.html shows python and django version 
  Body: When we are logged in as CMS users and have access to the cms toolbar, the "toolbar_javascript.html" template source code shows version information of Django, Python, etc. I think this could lead to security issues. A good solution would be to hide this data for production when settings.DEBUG=False
  
  ![Screenshot from 2022-03-22 12-51-58](https://user-images.githubusercontent.com/84343507/159468888-ff06d71b-3994-443e-afb0-9d3435c5aaac.png)
  
  django-cms==3.9.0
  
  