JI-942 Fix automatic title conversion

Author: icc

scripts/h5peditor-editor.js

@@ -295,6 +295,11 @@ ns.Editor.prototype.getContent = function (submit) {
     return;
   }
 
+  // Convert title to preserve html entities
+  const tmp = document.createElement('div');
+  tmp.innerHTML = content.title;
+  content.title = tmp.textContent; // WARNING: This is text, do NOT insert as HTML.
+
   library = new iframeEditor.ContentType(content.library);
   const upgradeLibrary = iframeEditor.ContentType.getPossibleUpgrade(library, this.selector.libraries.libraries !== undefined ? this.selector.libraries.libraries : this.selector.libraries);
   if (upgradeLibrary) {