add Opera's MD tests
remove stray manifest
ms2ger file api submission
include support
Move David Bruant's DOM Events tests into position.
Add a test for DOMTokenList's stringifier.
import from Marcosc's tests for DAP ambient light events
removed abs ref to w3c-test.org
Import of marcosc test cases for DAP proximity events spec
removed abs ref to w3c-test.org
Add a test for document.images.
Address some comments about the document.images test.
Make the last argument to DOMImplementation.createDocument optional.
https://www.w3.org/Bugs/Public/show_bug.cgi?id=22959
Update Blob-constructor.html for changes to WebIDL's conversion to sequence algorithm.
Split up tests for document.images.
Remove an unnecessary element.
Use window.onerror instead of window.addEventListener('error').

I believe the spec actually supports the latter now, but that is not the main goal of this test.
Use assert_equals for better error messages.
Remove an unnecessary element.
Remove unnecessary references to TestTWF.