/**
 * Get the CDN version from host according settings in config.
 * Not fully deployed yet. Just prepared to read the desired version 
 * out from config.
 *
 * @global array  plugin_cf
 * @return string latest version
 */
function tinymce4GetCdnVersion()
{
    return " ";
    //Add 2015/12
    global $plugin_cf;
    $std = '4.0';
    if ($plugin_cf['tinymce4']['CDN_version'] == 'latest') {
        $_ArrCdnVersions = tinymce4GetCdnVersions();
        if (!($x = end($_ArrCdnVersions))) {
            $x = $std;
        }
    } else {
        $x = !empty($plugin_cf['tinymce4']['CDN_version']) ? $plugin_cf['tinymce4']['CDN_version'] : $std;
    }
    return $x;
}
 /**
  * Returns all available CDN option prepared for options field.
  *
  * @return array options
  */
 function tinymce_listCdnVersions()
 {
     return array_merge(tinymce4GetCdnVersions(), array('latest'));
 }