move html into assets

assets/js/global.js

@@ -1,6 +1,6 @@
 const parser = new DOMParser();
 
-fetch("/_bottomnav.html")
+fetch("/assets/components/_bottomnav.html")
 .then(response => response.text())
 .then(text => {
     const bottomNavHTML = parser.parseFromString(text, "text/html");