test for the output element
add tests on setting defaultValue
add tests for value flag mode is in default/value mode
use W3C editor's draft
test contentEditable invalid value
test on focus/blur event
test on beforescriptexecute and afterscriptexecute
start prettifying the runner
added a log
s/SYNTAX_ERR/SyntaxError/ per testharness.js recommendation
Merge pull request #778 from deniak/contenteditable-exception

test contentEditable invalid value
add async_test to test that both events have been fired
Merge pull request #779 from deniak/focus-management

test on focus/blur event
Merge pull request #782 from deniak/script-before-after-events

test on beforescriptexecute and afterscriptexecute
Minor changes to some test message strings.
Merge pull request #658 from deniak/output-element

test for the output element
working UI
nice progress
fix zombie testing after stop
manual UI also looking good