Retrieve qunit CSS for running locally in the browser
Remove backstage plugin files
Use Grunt to run QUnit tests locally and via Sauce labs

Following this guide:
https://saucelabs.com/docs/javascript-unit-testing-tutorial
Use correct saucelabs credentials
Run jslib target prior to starting tests
Add Sauce Labs status images
Use jQuery cross-browser inArray instead of indexOf

indexOf does not exist as an Array function in IE8
Include json2.js in tests so that it can be used in IE7

Fixes JSON undefined errors.
Merge remote-tracking branch 'upstream/master' into saucelabs
Fix broken test in IE7 - case sensitivity for tiddlyFields

The test was previously looking for tiddlyfields but the
ToggleTiddlerPrivacyPlugin under test looks for tiddlyFields.

The TiddlyWiki code uses tiddlyFields but there are other
plugins in this code base which use tiddlfields. I am
reluctant to change this until test coverage is better
understood.
Just show browser test matrix
Makefile shortcuts for saucelab and local browser testing
Notes on how to run QUnit tests via Sauce Labs
Merge pull request #1073 from pads/saucelabs

Saucelabs Integration + IE 7/8 fixes