Update jQuery

[EdOverflow]

jQuery 1.5 has known vulnerabilities:

• CVE-2011-4969: http://research.insecurelabs.org/jquery/test/
• Selector interpreted as HTML: http://bugs.jquery.com/ticket/11290
• 3rd party CORS request may execute arbitrary code: http://blog.jquery.com/2016/01/08/jquery-2-2-and-1-12-released/

[Changaco]

The old website that contains a copy of jQuery 1.5 is no longer accessible (http://aspen.io/ now points to Read the Docs). It will be removed by #560.

[EdOverflow]

Oh, I see. It appears as though readthedocs.org is using an outdated version of jQuery too.