Tabs: Strip hash from remote content URLs
Tabs: Strip hash from remote content URLs

As of jQuery 3.0.0, hashes are no longer stripped for Ajax requests. This
causes issues in IE <11, so we need to strip this before making the request.

Ref jquery/jquery#1732
Closes gh-1736

GrayYoung/jQuery.UI.Extension,GrayYoung/jQuery.UI.Extension