Move the tests from .html to .sky

sky/tests/resources/js-test.sky

 <script>
 var isJsTest = true;
 
 var description, debug, successfullyParsed;
 
 var expectingError; // set by shouldHaveError()
 var expectedErrorMessage; // set by onerror when expectingError is true
 var unexpectedErrorMessage; // set by onerror when expectingError is not true
 
 (function() {
@@ skipping 570 matching lines @@
     isSuccessfullyParsed();
     if (self.internals)
         internals.notifyTestComplete(internals.contentAsText());
 }
 
 window.addEventListener('load', function() {
     if (!self.jsTestIsAsync)
         finishJSTest();
 });
 </script>