app-URI spec compliance tests
Import IDL tests for Geolocation API

http://dev.w3.org/geo/api/idl-test-suite/

- rename it to idl-test.html
- remove 'http://w3c-test.org' from testharness.js reference
Import Geolocation API Test Suite

http://dev.w3.org/geo/api/test-suite/test-suite.zip

- update test-suite.zip link to the above in Overview.html
- remove zip.sh

TODO: convert the tests to testharness.js tests
Add tests for Uint8ClampedArray
Add tests for ArrayBuffer
Remove the object test data
add tests for notification attributes method and event
update tests for notification description
Update tests for removing prefix in notification
Rewrite idl-test to interfaces and Geolocation_getCurrentPosition

- Use interfaces to check Geolocation API IDL
- Keep the rest as getCurrentPosition() callback checking
Address @Ms2ger's comments and rename a test file
Unify indentation
Remove tests covered by geo IDL tests in #348
Rewrite other geo tests using testharness.js as

- *_permission_allow* need location access allowed
- *_permission_deny* need location access denied
- the rest don't need location access permission granted
Order is apparently wrong making the test fail.

Based on my understanding of the tabindex behavior as explained in the
html5 living standard: pre-order, depth first tree order ("before any
element whose tabindex attribute has a value equal to the value of the
tabindex attribute on the element but that is later in the document in
tree order than the element").
Wrong order for some nodes unrelated to shadow dom

The expected order of nodes outside of the shadow root was wrong. Since
there is no identical tabindex in use, the order is simply tabindex.
"before any element whose tabindex attribute has a value greater than
the value of the tabindex attribute on the element."
add Shadow root olderShadowRoot Attributes test
read-write, read-only test
Fixed textarea content and input element description
Add URL IDL tests & drop stale (untested) URL IDLs

This change:

  [x] adds URL & URLUtils* IDL tests (up-to-date with current URL spec)
  [x] drops untested URL & URLUtils* IDLs from html/dom/interfaces.html
  [x] replaces old untested html/dom/interfaces.html URLUtils* IDLs w/ stubs

(Nothing in html/dom/interfaces.html references the URL interface anyway,
so there's no reason to include it there. And the URLUtils* IDLs that were
in there were out-of-date with the current URL spec, and regardless there's
no need to include the actual whole interfaces for them there, so instead
let's just put (untested) stubs for them there.)