SpeechRecognition test + minor improvements 

Summary:

* Removed the `speechinput` test as the speech attribute was replaced with a JavaScript API
* Added test for the JavaScript Speech Recognition API ([test page](http://jsbin.com/OqUTuXo/1))
* Made some other minor improvements:
   * Moved  `websockets.js` into the `websockets` directory and renamed `binary.js` to `websockets-binary.js`.
   * Updated the metadata for `elem/ruby.js` and `style/scoped.js`.

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@stucox can you review this ? Thanks!