Tests for the named access on the window object
Test when the muted IDL attribute is updated from the content attribute

Blink/WebKit has a bug here and fails the last two parser tests.
Test setting video.muted

video_muted_check.html is made redundant.
Test cloneNode- and innerHTML-created <video muted>

Presto fails the cloneNode test but nothing else.
Test more cases of setting video.muted
Test setting audio.muted

audio_muted_check.html is made redundant.
Test muted for document.write-created elements
Added -manual suffix to some manual dnd tests.
Renamed some renamed files.
Reorganize dnd X-doc test to fit with conventions.
Updated according to the review comments

1. Add a test to check  window['']
2. Remove two invalid assertions
3. Update some descriptions and etc.
Merge pull request #796 from w3c/submission/sideshowbarker/dnd

Added -manual filename suffix to some manual dnd test files.
add option to just dump JSON to a textarea
Disable the cloneNode muted test pending spec bug resolution
remove leftover value attribute; put ugly braces
Merge pull request #729 from foolip/muted

Test when the muted IDL attribute is updated from the content attribute
make it clearer what this is for
Merge pull request #803 from w3c/dump-json

add option to just dump JSON to a textarea
Merge pull request #712 from xiaojunwu/submission/xiaojunwu/window-named-objects

Tests for the named access on the window object