wai-aria: Fix overly-enthusiastic escaping of "_" (#96)

* wai-aria: Updated results

* Bug fixes in WebKit
* Corrected test path (wai-aria; not wai-aria/aria11)

* wai-aria: Updated results for WebKitGtk

* ARIA table properties are now exposed as AtkObject attributes
  https://trac.webkit.org/changeset/216028

* wai-aria: Update failed assertion with associated GNOME bug

* wai-aria: Updated results related to aria-orientation

* New passes for WebKitGtk and Safari as a result of this fix:
  https://bugs.webkit.org/show_bug.cgi?id=171166
* Updated expected values for AX API (AXUnknownOrientation; not <nil>)

* wai-aria: Updated results

* More bug fixes in WebKit (WebKitGtk and Safari)
* Include actual results in message
* Escape "_" chars in json files

* wai-aria: Fix overly-enthusiastic escaping of "_"

The escaping accidentally included test names breaking links and
resulting in duplicate tests in the tests list.