move Opera's media tests
Check for TypeError for invalid enum values as function parameters
Use instanceof to test object type instead testing random properties
Test that undefined behaves like a missing parameter
Correctly escape \u0000 in a test name
Fix indentation of 'use strict'
Move files left behind in old-tests/submission/Opera/media/
Merge pull request #1 from foolip/submission/Opera/media

Fix a few review issues
Attempt to fix cloneNode.html
Add back t.cues.length check
Catch error events on track to avoid timeouts
This shouldn't throw per http://heycam.github.io/webidl/#dfn-attribute-setter step 4
Remove unused argument
Fix typo (missing t)
Fix missing assert_equals( and use a different way to trigger error event
Point to the right location for helper js files
Remove unnecessary no-cache for .vtt files
Remove reftest manifest (-ref in filename or <link> should be used)
Remove adhoc non-tests
Move webvtt tests to a top-level folder