Fixed #25289 -- Updated admin's jQuery to 2.1.4.

django/contrib/admin/static/admin/js/vendor/jquery/LICENSE-JQUERY.txt

-Copyright (c) 2010 John Resig, http://jquery.com/
- 
+Copyright jQuery Foundation and other contributors, https://jquery.org/
+
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/jquery/jquery
+
+====
+
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
@@ -7,14 +13,14 @@ without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:
- 
+
 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.
- 
+
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

docs/ref/contrib/admin/index.txt

@@ -1887,7 +1887,7 @@ jQuery
 Django admin JavaScript makes use of the `jQuery`_ library.
 
 To avoid conflicts with user-supplied scripts or libraries, Django's jQuery
-(version 1.11.2) is namespaced as ``django.jQuery``. If you want to use jQuery
+(version 2.1.4) is namespaced as ``django.jQuery``. If you want to use jQuery
 in your own admin JavaScript without including a second copy, you can use the
 ``django.jQuery`` object on changelist and add/edit views.
 
@@ -1895,6 +1895,12 @@ in your own admin JavaScript without including a second copy, you can use the
 
     The embedded jQuery has been upgraded from 1.9.1 to 1.11.2.
 
+.. versionchanged:: 1.9
+
+    The embedded jQuery has been upgraded from 1.11.2 to 2.1.4. This drops
+    support for Internet Explorer 8 and below. You can restore support by
+    :ref:`including your own version of jQuery 1.X <admin-browser-support-19>`.
+
 The :class:`ModelAdmin` class requires jQuery by default, so there is no need
 to add jQuery to your ``ModelAdmin``’s list of media resources unless you have
 a specific need. For example, if you require the jQuery library to be in the

docs/releases/1.9.txt

@@ -912,12 +912,32 @@ resulting in SQL like ``"related_id IN (SELECT id FROM ...)"``.
 This implicit ``__in`` no longer happens so the "IN" SQL is now "=", and if the
 subquery returns multiple results, at least some databases will throw an error.
 
+.. _admin-browser-support-19:
+
+``contrib.admin`` browser support
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The admin no longer supports Internet Explorer 8 and below, as these browsers
+have reached end-of-life.
+
+CSS and images to support Internet Explorer 6 and 7 have been removed. PNG and
+GIF icons have been replaced with SVG icons, which are not supported by
+Internet Explorer 8 and earlier.
+
+The jQuery library embedded in the admin has been upgraded from version 1.11.2
+to 2.1.4. jQuery 2.x has the same API as jQuery 1.x, but does not support
+Internet Explorer 6, 7, or 8, allowing for better performance and a smaller
+file size. If you need to support IE8 and must also use the latest version of
+Django, you can override the admin's copy of jQuery with your own by creating
+a Django application with this structure::
+
+    app/static/admin/js/vendor/
+        jquery.js
+        jquery.min.js
+
 Miscellaneous
 ~~~~~~~~~~~~~
 
-* CSS and images in ``contrib.admin`` to support Internet Explorer 6 & 7 have
-  been removed as these browsers have reached end-of-life.
-
 * The jQuery static files in ``contrib.admin`` have been moved into a
   ``vendor/jquery`` subdirectory.