Several quality improvements including top and bottom bus bar, seperate downloads for bus bars and a sharable configuration link

Co-authored-by: Copilot <copilot@github.com>

node_modules/nanoid/url-alphabet/index.cjs

@@ -0,0 +1,7 @@
+// This alphabet uses `A-Za-z0-9_-` symbols.
+// The order of characters is optimized for better gzip and brotli compression.
+// Same as in non-secure/index.js
+let urlAlphabet =
+  'useandom-26T198340PX75pxJACKVERYMINDBUSHWOLF_GQZbfghjklqvwyzrict'
+
+module.exports = { urlAlphabet }