After updating the site to add JQuery, I noticed that the Github aside and the sidebar toggle no longer worked.
Opening up the console I saw the following errors
TypeError: Object 0 has no method ‘charAt’
and for the Github plugin
Method JSONP is not allowed by Access-Control-Allow-Methods
Googling for these lead me to Daniel Hilgarth's blog where he has two posts on how to solve the charAt and jsonp issues.
→ posted on November 20, 2016octopress