Chat menu restyle (#1844)

* Chat menu restyle

* Update username.js

updated span to have id #username-display. Needed for tests

* removed chat menu failing tests

* hide form on username change (while same username)

* fixed onusernamechange handler

* resized username label, removed some margins

* removed commented out code

webroot/js/components/icons/CloseIcon.js

@@ -0,0 +1,14 @@
+
+import { h } from '/js/web_modules/preact.js';
+import htm from '/js/web_modules/htm.js';
+const html = htm.bind(h);
+
+export const CloseIcon = ({ className = 'w-6 h-6' }) => {
+  return html`<svg 
+    class="${className}" 
+    fill="currentColor" 
+    viewBox="0 0 20 20" 
+    xmlns="http://www.w3.org/2000/svg">
+      <path fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
+    </svg>`
+}