Repair travis qunit

[swilliamset]

Travis ci failing because of something introduced in qunit 2.3.1.
https://github.com/qunitjs/qunit/blob/master/History.md#231--2017-04-10

Pinning until more research can be done and PRs are unblocked.

To see error pull down master and do a fresh bower install.

git fetch upstream;
git checkout master;
git reset --hard upstream/master;
rm -rf bower_components;
bower install;
grunt travisci;

this will fail on

like #1959 https://travis-ci.org/ExactTarget/fuelux/builds/222159155

To see fix pull down the branch and do a fresh bower install.

git fetch swilliamset;
git checkout -b repair-travis-qunit;
git reset --hard swilliamset/repair-travis-qunit;
rm -rf bower_components;
bower install;
grunt travisci;

[swilliamset]

@cmcculloh please coordinate with @chriscorwin.