General selectors are retrieving elements from results within the sandbox

[roelrz]

In unit test spec files, using a general selector like $('h2') actually fetches h2 elements from the fixture and results.

For example, if running a test with mocha, such a selector would fetch h2 elements from two div elements:
<div id="venus-fixture-sandbox"></div>
<div id="mocha"></div>

We need to make sure elements are only fetched from the former div and not the latter