[www] WIP - Begin copying cordova files during contentSync.

This is a work in progress:

- it will crash during the extraction phase
- next task is to instantiate parentDirectory on L300:app.js
- parentDirectory must be the dirPath path represented as a FileSystem
  Directory object
- to do this, you will need to un-promise the fileUtils.getDirectory
  function in www/js/fileUtils.js