Update CodeMirror dep to v5.42.2

Affects Code and Markdown section types

gui/public/codemirror/mode/tiki/index.html

@@ -8,9 +8,9 @@
 <link rel="stylesheet" href="tiki.css">
 <script src="../../lib/codemirror.js"></script>
 <script src="tiki.js"></script>
-<style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
+<style>.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
 <div id=nav>
-  <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>
 
   <ul>
     <li><a href="../../index.html">Home</a>
@@ -85,7 +85,7 @@ Plugin (inline):
 {plugin attr="my attr"}
 </textarea></div>
 
-<script type="text/javascript">
+<script>
 	var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
         mode: 'tiki',      
         lineNumbers: true

gui/public/codemirror/mode/tiki/tiki.js

@@ -1,5 +1,5 @@
 // CodeMirror, copyright (c) by Marijn Haverbeke and others
-// Distributed under an MIT license: http://codemirror.net/LICENSE
+// Distributed under an MIT license: https://codemirror.net/LICENSE
 
 (function(mod) {
   if (typeof exports == "object" && typeof module == "object") // CommonJS