Stopped the admin JavaScript code from completely removing the `jQuery` object from the global namespace to ease the use of jQuery plugins. The `django.jQuery` object is still supposed to be used by Django's own JavaScript files. Refs #12882.
Stopped the admin JavaScript code from completely removing the `jQuery` object from the global namespace to ease the use of jQuery plugins. The `django.jQuery` object is still supposed to be used by Django's own JavaScript files. Refs #12882.

git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@16415 bcc190cf-cafb-0310-a4f2-bffc1f526a37

disqus/django-old,disqus/django-old,disqus/django-old