Use jQuery 2.2.4 (#2581)

doc/conf.py

@@ -14,6 +14,7 @@
 import sys
 import os, subprocess
 import shlex
+import urllib
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -163,7 +164,10 @@ def setup(app):
     # Add hook for building doxygen xml when needed
     # no c++ API for now
     # app.connect("builder-inited", generate_doxygen_xml)
+    urllib.urlretrieve('https://code.jquery.com/jquery-2.2.4.min.js',
+                       '_static/jquery.js')
     app.add_config_value('recommonmark_config', {
             'url_resolver': lambda url: github_doc_root + url,
             }, True)
     app.add_transform(AutoStructify)
+    app.add_javascript('jquery.js')