Merge pull request #843 from inexorabletash/master

Remove bogus assertion from IndexedDB invalid key test
the HTTP interface expects a date, not a string containing a date
Remove preload tests until review is complete.

These tests are great, but they were written against Presto and
test a bunch of things that are not in the spec. This is being fixed
in r/604 but until then it seems better to remove them since some of the
problems lead to instability in results.
Merge pull request #844 from w3c/fix-cookie

the HTTP interface expects a date, not a string containing a date
Use https URL for submodules to help with firewalls.
Merge pull request #845 from w3c/jgraham/remove_preload

Remove preload tests until review is complete.
cc Added some ins|del@datetime validator tests.
cc Restored some accidentally-deleted files.
cc Checkpointed messages.json file.
cc Minor housekeeping.
Merge pull request #848 from inexorabletash/master

Correct IndexedDB test issues
Add a test for missing a 'rel' attribute
Mention installing html5lib to run the tests in the README.md
fix testcommon.js path
Merge pull request #856 from SangsooNam/sub-imports-missing-rel

Add a test for missing a 'rel' attribute
Merge pull request #861 from sizuhiko/submission/sizuhiko/fix_testcommon_js_path

fix testcommon.js path
Merge pull request #857 from saneyuki/saneyuki/readme

Mention installing html5lib to run the tests in the README.md
cc Minor housekeeping.
Fix syntax errors in WebDriver client

Signed-off-by: AutomatedTester <dburns@mozilla.com>
Don't probe IDBRequest.error if still pending