Created by: pvdlg
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In IE calling getBoundingClientRect on an element that is not attached to the DOM throw an Unspecified error: https://connect.microsoft.com/IE/feedback/details/829392/calling-getboundingclientrect-on-an-html-element-that-has-not-been-added-to-the-dom-causes-unspecified-error
Saucelabs is failing because some unit test for Scrollspy doesn't add the element worked on to the DOM.
This PR make sure the unit test add the element used in the test to the qunit-fixture as the scrollspy plugin is meant to work on element present on the page.