add Opera's MD tests
remove stray manifest
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
Split up tests for document.images.
Added html-its tests.
Add a test for the textContent setter.
Update withintext1html.html

Update withintext3html.html

Update withintext4html.html
constructor shoul refer to SCHEME_DOMAIN_PORT
Fix silly bug
Get rid of code duplication
Speed up some slow tests
Removed vendor prefixes in user timing tests
Merge pull request #339 from plehegar/submissions/user-timing

Removed vendor prefixes in user timing tests
Add a file for javascript utilities and a function for constructing absolute urls.