fix broken qunit links in tests

Replace the broken links by local copies of jquery and qunit. This
allows developers to easily run the tests while they are off-line,
or while jquery.com is off-line.
Merge pull request #520 from sbyrnes321/develop

fix broken qunit links in tests
Fixing reference to removed function

The DrawManager.draw() function was removed some time ago, but the
SimulateFrames() function was still referencing it. This was causing
tests in stage.html to fail.