Replace TinyMCE 4.2.8 with a small local editor.

TinyMCE 4.2.8 has known XSS bugs. publish/editor.js has the same toolbar
and writes the same HTML. The textarea still posts the story.

publish/edit.php

@@ -23,7 +23,7 @@ if (!isset($_SESSION['editor'])) {
     <link rel='stylesheet' type='text/css' href='../publish/style.css' />
     <script type="text/javascript" src="../utilities.js"></script>
     <link rel="alternate" type="application/rss+xml" title="xxx.org.za RSS feed" href="/feed" />
-<?php include_once('./tinymce_init.inc.php'); ?>
+<?php include_once('./editor.inc.php'); ?>
   </head>
 <?php
   flush();