[FEATURE] Update to tinymce 4.0

VERSIONS

class.tinymce.php

doc/manual.sxw

ext_conf_template.txt

langMerge.sh

tinymce/langs/ar.js

tinymce/langs/bg_BG.js

tinymce/langs/bs.js

tinymce/langs/ca.js

tinymce/langs/cs.js

tinymce/langs/da.js

tinymce/langs/de.js

tinymce/langs/de_AT.js

tinymce/langs/el.js

tinymce/langs/es.js

tinymce/langs/fa.js

tinymce/langs/fi.js

tinymce/langs/fo.js

tinymce/langs/fr_FR.js

tinymce/langs/gl.js