Depend on tinymce-builded 4.1.6, include TinyMCE copy and sed configuration in here and fix some sed tasks.  Revert cd89d377e10a28b797fd3c9d48410ad6ad597486: 'Remove bower dependency on tinymce-builded, since the tinymce dependency already points to the official builded tinymce-dist reposotory.' tinymce-dist doesn't include the language files, which are needed.