Render and sanitize chat messages server-side. (#237)

* Render and sanitize chat messages server-side. Closes #235

* Render content.md server-side and return it in the client config

* Remove showdown from web project

* Update api spec

* Move example user content file

webroot/js/web_modules/@videojs/http-streaming/dist/videojs-http-streaming.min.js

@@ -1,5 +1,4 @@
-import { c as createCommonjsModule, a as commonjsGlobal, g as getDefaultExportFromCjs } from '../../../common/_commonjsHelpers-37fa8da4.js';
-import { d as document_1, w as window_1$1 } from '../../../common/window-2f8a9a85.js';
+import { c as createCommonjsModule, a as commonjsGlobal, d as document_1, w as window_1$1, g as getDefaultExportFromCjs } from '../../../common/window-1e586371.js';
 
 var _extends_1 = createCommonjsModule(function (module) {
 function _extends() {

webroot/js/web_modules/common/window-1e586371.js

@@ -0,0 +1,66 @@
+var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
+
+function getDefaultExportFromCjs (x) {
+	return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
+}
+
+function createCommonjsModule(fn, basedir, module) {
+	return module = {
+		path: basedir,
+		exports: {},
+		require: function (path, base) {
+			return commonjsRequire(path, (base === undefined || base === null) ? module.path : base);
+		}
+	}, fn(module, module.exports), module.exports;
+}
+
+function getDefaultExportFromNamespaceIfNotNamed (n) {
+	return n && Object.prototype.hasOwnProperty.call(n, 'default') && Object.keys(n).length === 1 ? n['default'] : n;
+}
+
+function commonjsRequire () {
+	throw new Error('Dynamic requires are not currently supported by @rollup/plugin-commonjs');
+}
+
+var _nodeResolve_empty = {};
+
+var _nodeResolve_empty$1 = /*#__PURE__*/Object.freeze({
+	__proto__: null,
+	'default': _nodeResolve_empty
+});
+
+var minDoc = /*@__PURE__*/getDefaultExportFromNamespaceIfNotNamed(_nodeResolve_empty$1);
+
+var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal :
+    typeof window !== 'undefined' ? window : {};
+
+
+var doccy;
+
+if (typeof document !== 'undefined') {
+    doccy = document;
+} else {
+    doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];
+
+    if (!doccy) {
+        doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
+    }
+}
+
+var document_1 = doccy;
+
+var win;
+
+if (typeof window !== "undefined") {
+    win = window;
+} else if (typeof commonjsGlobal !== "undefined") {
+    win = commonjsGlobal;
+} else if (typeof self !== "undefined"){
+    win = self;
+} else {
+    win = {};
+}
+
+var window_1 = win;
+
+export { commonjsGlobal as a, createCommonjsModule as c, document_1 as d, getDefaultExportFromCjs as g, window_1 as w };

webroot/js/web_modules/import-map.json

@@ -6,7 +6,6 @@
     "@videojs/themes/fantasy/index.css": "./@videojs/themes/fantasy/index.css",
     "htm": "./htm.js",
     "preact": "./preact.js",
-    "showdown": "./showdown.js",
     "tailwindcss/dist/tailwind.min.css": "./tailwindcss/dist/tailwind.min.css",
     "video.js/dist/video-js.min.css": "./videojs/dist/video-js.min.css",
     "video.js/dist/video.min.js": "./videojs/dist/video.min.js"

webroot/js/web_modules/videojs/dist/video.min.js

@@ -1,5 +1,4 @@
-import { c as createCommonjsModule, a as commonjsGlobal } from '../../common/_commonjsHelpers-37fa8da4.js';
-import { w as window_1, d as document_1 } from '../../common/window-2f8a9a85.js';
+import { c as createCommonjsModule, w as window_1, d as document_1, a as commonjsGlobal } from '../../common/window-1e586371.js';
 
 var video_min = createCommonjsModule(function (module, exports) {
 /**